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Untitled Quiz

Total questions: 120

Worksheet time: 1hrs 10mins

Name
Class
Date
1.

Với A,B là hai biểu thức bất kì, (A+B)2 =

a)

A + B2

b)

A - B2

c)

A2+ AB + B2

d)

A2 + 2AB + B2

2.

Với A,B là hai biểu thức bất kì, ( A - B)2 =​

a)

A2 - AB + B2

b)

A2 + 2AB + B2

c)

A2 -2AB + B2

d)

A2 -2AB - B2

3.

x2 + 4xy + 16y2 = (x + 4y)2 đúng hay sai

a)

đúng

b)

sai

4.

Viết thành bình phương của một hiệu a2 - 4ab + 4b2 =.......

a)

(a - 4b)2

b)

(a - 2b)2

c)

(a + 2b)2

d)

(a + 4b)2

5.

Bình phương của một tổng là

a)


(a+b)2\left(a+b\right)^2

b)

a2 +b2a^{2\ }+b^2

c)

(a−b)2\left(a-b\right)^2

d)

a2 −b2a^{2\ }-b^2

6.

Hằng đẳng thức số 1 có dạng là:

(a+b)2 = \left(a+b\right)^2\ =\  

a)

a2 −2ab + b2a^{2\ }-2ab\ +\ b^2  

b)

a2 +2ab+b2a^{2\ }+2ab+b^2  

c)

(a−b).(a+b)\left(a-b\right).\left(a+b\right)  

d)

a2 +b2a^{2\ }+b^2  

7.

Hằng đẳng thức số 2 có dạng là:

a2 −2ab + b2a^{2\ }-2ab\ +\ b^2  = 

a)

a2 −b2a^{2\ }-b^2  

b)

(a−b)2\left(a-b\right)^2  

c)

(a+b)2 \left(a+b\right)^{2\ }  

d)

a2 +b2a^{2\ }+b^2  

8.

Kết quả rút gọn

(3−2x)(3+2x) \left(3-2x\right)\left(3+2x\right)\  là bao nhiêu

a)

9+4x29+4x^2  

b)

9−4x29-4x^2  

c)

9−12x +4x29-12x\ +4x^2  

d)

9+12x+4x29+12x+4x^2  

9.

Hằng đẳng thức số 3 là

a2 −b2 =a^{2\ }-b^2\ =  

a)

(a−b)(a+b)\left(a-b\right)\left(a+b\right)  

b)

a2 − 2ab +b2a^2\ -\ 2ab\ +b^2  

c)

a2 +2ab+b2a^2\ +2ab+b^2  

d)

(a−b)2\left(a-b\right)^2  

10.

x2 + 12x + 36 =

a)

(6 + x)2

b)

(x + 36)2

c)

(x + 3)(x + 4)

d)

x(x + 12) - 36

11.

9x2 - 6x +1 =

a)

(x - 3)2

b)

(3x + 1)2

c)

(x + 3)2

d)

(3x -1)2

12.

(A+B)2\left(A+B\right)^2  =.............
Chọn đáp án đúng để điền vào chỗ chấm.

a)

A2+2AB−B2A^2+2AB-B^2  

b)

A2+2AB+B2A^2+2AB+B^2  

c)

A2−2AB+B2A^2-2AB+B^2  

d)

A2−2AB−B2A^2-2AB-B^2  

13.

Chọn đáp án đúng để điền vào chỗ chấm

(A − B)2\left(A\ -\ B\right)^2  =...........................

a)

A2−2AB +B2A^2-2AB\ +B^2  

b)

A2−2AB −B2A^2-2AB\ -B^2  

c)

A2+2AB +B2A^2+2AB\ +B^2  

d)

A2−B2A^2-B^2  

14.

Chọn đáp án đúng để điền vào chỗ chấm:

A2−B2=...................................A^2-B^2=...................................  

a)

(B+A)2AB\left(B+A\right)2AB  

b)

A2−2ABA^2-2AB  

c)

A2−2AB+B2A^2-2AB+B^2  

d)

(A−B)(A+B)\left(A-B\right)\left(A+B\right)  

15.

Chọn đáp án đúng để điền vào chỗ chấm:

(A+B)3=...............................\left(A+B\right)^3=...............................  

a)

A3+B3A^3+B^3  

b)

A3−3A2B+3AB2−B3A^3-3A^2B+3AB^2-B^3  

c)

A3+3A2B+3AB2+B3A^3+3A^2B+3AB^2+B^3  

d)

A3+B3 +3ABA^3+B^{3\ }+3AB  

16.

Chọn đáp án đúng để điền vào chỗ chấm:

A3+B3 =.........................A^3+B^3\ =.........................  

a)

(A+B)(A2+AB+B2)\left(A+B\right)\left(A^2+AB+B^2\right)  

b)

(A+B)(A2−AB−B2)\left(A+B\right)\left(A^2-AB-B^2\right)  

c)

(A−B)(A2+AB+B2)\left(A-B\right)\left(A^2+AB+B^2\right)  

d)

(A+B)(A2−AB+B2)\left(A+B\right)\left(A^2-AB+B^2\right)  

17.

Chọn đáp án đúng để điền vào chỗ chấm:

A3−B3=.......................A^3-B^3=.......................  

a)

(A+B)(A2+AB+B2)\left(A+B\right)\left(A^2+AB+B^2\right)  

b)

(A−B)(A2+AB+B2)\left(A-B\right)\left(A^2+AB+B^2\right)  

c)

(A−B)(A2−AB−B2)\left(A-B\right)\left(A^2-AB-B^2\right)  

d)

A3−3A2B+3AB2+B3A^3-3A^2B+3AB^2+B^3  

18.

Chọn đáp án đúng để điền vào chỗ chấm:

(A−B)3=.....................................\left(A-B\right)^3=.....................................  

a)

A3+3A2B+3AB2+B3A^3+3A^2B+3AB^2+B^3  

b)

A3−3A2B−3AB2−B3A^3-3A^2B-3AB^2-B^3  

c)

A3−3A2B+3AB2−B3A^3-3A^2B+3AB^2-B^3  

d)

A3−B3A^3-B^3  

19.

Chọn đáp án đúng để điền vào chỗ chấm:

(x+3)2=......................\left(x+3\right)^2=......................  

a)

x2+9x^2+9  

b)

x2+6x+9x^2+6x+9  

20.

Chọn đáp án đúng để điền vào chỗ chấm:

(2x−1)2=..............................\left(2x-1\right)^2=..............................  

a)

4x2−4x+14x^2-4x+1  

b)

4x2+4x−14x^2+4x-1  

21.

100−A2 =100-A^2\ =  

a)

(100−A)(100+A)\left(100-A\right)\left(100+A\right)  

b)

(A−10)(A+10)\left(A-10\right)\left(A+10\right)  

c)

A2−102A^2-10^2  

d)

(10−A)(10+A)\left(10-A\right)\left(10+A\right)  

22.

(3−2x)2=\left(3-2x\right)^2=  

a)

9−6x+4x29-6x+4x^2  

b)

9+12x+4x29+12x+4x^2  

c)

4x2−12x+94x^2-12x+9  

d)

9−12x+x29-12x+x^2  

23.

Viết biểu thức x3+12x2+48x+64x^3+12x^2+48x+64  dưới dạng lập phương một tổng

a)

(x+4)3\left(x+4\right)^3  

b)

(x−4)3\left(x-4\right)^3  

c)

(x−8)3\left(x-8\right)^3  

d)

(x+8)3\left(x+8\right)^3  

24.

Viết biểu thức x3−6x2+12x−8x^3-6x^2+12x-8  dưới dạng lập phương một hiệu

a)

(x+4)3\left(x+4\right)^3  

b)

(x−4)3\left(x-4\right)^3  

c)

(x−2)3\left(x-2\right)^3  

d)

(x+2)3\left(x+2\right)^3  

25.

(x + y)(x - y) =

a)

x2+a2x^2+a^2  

b)

  x2+2xy+y2x^2+2xy+y^2

c)

x2−y2x^2-y^2  

d)

x2+y2x^2+y^2  

26.

(2x−y)(2x+y)=?\left(2x-y\right)\left(2x+y\right)=?  

a)

(2x−y)2\left(2x-y\right)^2  

b)

2x2−y22x^2-y^2  

c)

4x2−y24x^2-y^2  

d)

2x2+y22x^2+y^2  

27.

(a+b)3=?\left(a+b\right)^3=?  

a)

a3+3ab+3ab2+b3a^3+3ab+3ab^2+b^3  

b)

a3+b3a^3+b^3  

c)

a3+3ab2+3ab+b3a^3+3ab^2+3ab^{ }+b^3  

d)

a3+3a2b+3ab2+b3a^3+3a^2b+3ab^2+b^3  

28.

(a−b)3=?\left(a-b\right)^3=?  

a)

a3−3ab+3ab2−b3a^3-3ab+3ab^2-b^3  

b)

a3−3a2b+3ab2−b3a^3-3a^2b+3ab^2-b^3  

c)

a3−3a2b−3ab2−b3a^3-3a^2b-3ab^2-b^3  

d)

a3−3a2b+3ab2+b3a^3-3a^2b+3ab^2+b^3  

29.

(a+b)2=?\left(a+b\right)^2=?  

a)

a2+ab+b2a^2+ab+b^2  

b)

a2+2ab+b2a^2+2ab+b^2  

c)

a2+b2a^2+b^2  

d)

a2+4ab+b2a^2+4ab+b^2  

30.

(a−b)2=?\left(a-b\right)^2=?  

a)

a2−ab+b2a^2-ab+b^2  

b)

a2+2ab+b2a^2+2ab+b^2  

c)

a2−2ab+b2a^2-2ab+b^2  

d)

a2−b2a^2-b^2  

31.

a2−b2=?a^2-b^2=?  

a)

(a+b)(a−b)\left(a+b\right)\left(a-b\right)  

b)

(a+b)(a+b)\left(a+b\right)\left(a+b\right)  

c)

(a−b)(a−b)\left(a-b\right)\left(a-b\right)  

d)

(a−b)2\left(a-b\right)^2  

32.

(a+b)3=?\left(a+b\right)^3=?  

a)

a3+3ab+3ab2+b3a^3+3ab+3ab^2+b^3  

b)

a3+b3a^3+b^3  

c)

a3+3ab2+3ab+b3a^3+3ab^2+3ab^{ }+b^3  

d)

a3+3a2b+3ab2+b3a^3+3a^2b+3ab^2+b^3  

33.

(a−b)3=?\left(a-b\right)^3=?  

a)

a3−3ab+3ab2−b3a^3-3ab+3ab^2-b^3  

b)

a3−3a2b+3ab2−b3a^3-3a^2b+3ab^2-b^3  

c)

a3−3a2b−3ab2−b3a^3-3a^2b-3ab^2-b^3  

d)

a3−3a2b+3ab2+b3a^3-3a^2b+3ab^2+b^3  

34.

x2 - 4x +4

a)

(x + 1)2

b)

(2 + x)2

c)

(x - 1)3

d)

(x - 2)2

35.

(3x - 1) (3x + 1) = ...

a)

(3x - 1)2

b)

9x2 - 1

c)

3x2 -1

d)

(3x + 1)2

36.

16x2 + 24x + 9 = ...

a)

(4x + 3)(4x - 3)

b)

(4x - 3)2

c)

(4x + 3)2

d)

(3 - 4x)2

37.

8x3 + y3 = ...

a)

(2x + y)(4x2 + 2xy + y3)

b)

(2x - y)(4x2 + 2xy + y3)

c)

(2x + y)(4x2 - 2xy + y3)

d)

(2x + y)(4x2 + 4xy + y3)

38.

Khai triển (x+1)2\left(x+1\right)^2 =?

a)

x2 + x + 1

b)

x2 + 1

c)

x2 + 2x + 1

d)

x2 + 2x + 2

39.

Khai triển (x−5)2\left(x-5\right)^2 =?

a)

x2 - 5x + 25

b)

x2 - 10x + 5

c)

x2 - 25x + 5

d)

x2 - 10x + 25

40.

Khai triển (2x+4)2\left(2x+4\right)^2 =?

a)

4x2 + 16x + 8

b)

4x2 + 8x + 16

c)

2x2 + 8x + 16

d)

4x2 + 16x + 16

41.

Khai triển (4x−3)2\left(4x-3\right)^2 =?

a)

16x2 - 24x + 6

b)

16x2 - 24x + 9

c)

16x2 - 6x + 9

d)

16x2 - 12x + 9

42.

(x−3)(x+3)\left(x-3\right)\left(x+3\right) =?

a)

x + 3

b)

x2−2x+4x^2-2x+4

c)

x2−6x+9x^2-6x+9

d)

x2−9x^2-9

43.

(6x−5)(6x+5)=?\left(6x-5\right)\left(6x+5\right)=?

a)

36x2+2536x^2+25

b)

36x2−2536x^2-25

c)

6x2+256x^2+25

d)

36x2−10x+2536x^2-10x+25

44.

Điền vào chỗ chấm: (x+5)2=x2+...x+25\left(x+5\right)^2=x^2+...x+25

a)

10

b)

5

c)

2

d)

25

45.

Điền vào chỗ chấm: (x−4)2=x2−...x+16\left(x-4\right)^2=x^2-...x+16

a)

10

b)

8

c)

4

d)

16

46.

(y−7)2=y2−14y+...\left(y-7\right)^2=y^2-14y+...

a)

7

b)

14

c)

y2y^2

d)

49

47.

(7x+4)(7x−4)=...−16\left(7x+4\right)\left(7x-4\right)=...-16

a)

7x27x^2

b)

49x49x

c)

49x249x^2

d)

7x

48.

(a+b)2=a2+b2\left(a+b\right)^2=a^2+b^2

a)

ĐÚNG

b)
SAI
49.

(x−5)2=x2−25\left(x-5\right)^2=x^2-25

a)

ĐÚNG

b)
SAI
50.

Điền vào chỗ chấm: (x+6)2=x2+...x+36\left(x+6\right)^2=x^2+...x+36

a)

36

b)

18

c)

12

51.

Khai triển (4x−1)2\left(4x-1\right)^2 =?

a)

16x2 - 8x + 1

b)

16x2 - 4x + 1

c)

16x2 - 2x + 1

d)

16x2 - 8x + 4

52.

Khai triển (3x−4)2\left(3x-4\right)^2 =?

a)

9x2 - 8x + 16

b)

9x2 - 12x + 16

c)

9x2 - 24x + 8

d)

9x2 - 24x + 16

53.

Khai triển (5x−3)(5x+3)\left(5x-3\right)\left(5x+3\right) =?

a)

25x2 + 15x - 9

b)

25x2 - 15x + 9

c)

25x2 + 9

d)

25x2 - 9

54.

(x+2)3 =?

a)

x3 +6x2 +12x +8

b)

x3 +3x2 +3x +8

c)

x3 +6x2 + 8x +8

d)

x3 + 4x2 +8x +8

55.

(x−3)3 =?

a)

x3 −6x2 +9x −27

b)

x3 −9x2 +9x −27

c)

x3− 9x2 +27x −27

d)

x3 −3x2 +3x −27

56.

(2x+1)3 =?

a)

8x3 +6x2 +3x +1

b)

8x3 +6x2 +6x +1

c)

8x3 +6x2 +x +1

d)

8x3 +12x2 +6x +1

57.

(3x−2)3 =?

a)

27x3 −18x2 +12x −8

b)

27x3 −54x2 +36x −8

c)

27x3 −36x2 +12x −8

d)

27x3 −54x2 +24x −8

58.

(x+1)(x2−x+1) =?

a)

x3+x2−x+1

b)

x3+1

c)

x3−x+1

d)

x3−1

59.

(x−2)(x2+2x+4)

a)

x3+8

b)

x3 -8

c)

x3+2

d)

x3-2

60.

(2x+3)(4x2−6x+9)

a)

8x3 +27

b)

8x3 -27

c)

8x3-9

d)

8x3 +9

61.

Cho x3+y3=189, x+y=9. Tính xy.

a)

2

b)

42

c)

16

d)

20

62.

Cho a−b=5, ab=4. Tính a3−b3

a)

65

b)

145

c)

165

d)

185

63.

x2−y2=?x^2-y^2=?  

a)

(x+y)(x−y)\left(x+y\right)\left(x-y\right)  

b)

(2x−y)(2x+y)\left(2x-y\right)\left(2x+y\right)  

c)

(2y+x)(2y−x)\left(2y+x\right)\left(2y-x\right)  

d)

x2−2xy+y2x^2-2xy+y^2  

64.

x2−1=?x^2-1=?  

a)

x−1x-1  

b)

x+1x+1  

c)

(x+1)(x−1)\left(x+1\right)\left(x-1\right)  

d)

x2−2x+1x^2-2x+1  

65.

(x+3)2=?\left(x+3\right)^2=?  

a)

x2+6x+9x^2+6x+9  

b)

x2−6x+9x^2-6x+9  

c)

x2+2x+9x^2+2x+9  

d)

x2−2x+9x^2-2x+9  

66.

(x−2)2=?\left(x-2\right)^2=?  

a)

x2−4x+4x^2-4x+4  

b)

x2+4x+4x^2+4x+4  

c)

x2−2x+4x^2-2x+4  

d)

x2+2x+4x^2+2x+4  

67.

(x−y)2=?\left(x-y\right)^2=?  

a)

x2−2xy+y2x^2-2xy+y^2  

b)

(x+y)(x−y)\left(x+y\right)\left(x-y\right)  

c)

x2+2xy+y2x^2+2xy+y^2  

d)

x3−3x2y+3xy2−y3x^3-3x^2y+3xy^2-y^3  

68.

(2x+1)2=?\left(2x+1\right)^2=?  

a)

4x2+4x+14x^2+4x+1  

b)

2x2+4x+12x^2+4x+1  

c)

2x2+2x+12x^2+2x+1  

d)

4x2+4x+44x^2+4x+4  

69.

(1−y)2=?\left(1-y\right)^2=?  

a)

1−2y+y21-2y+y^2  

b)

1+2y+y21+2y+y^2  

c)

1−y21-y^2  

d)

(1+y)(1−y)\left(1+y\right)\left(1-y\right)  

70.

A2−B2=?A^2-B^2=?  

a)

(A+B)(A−B)\left(A+B\right)\left(A-B\right)  

b)

(2A−B)(2A+B)\left(2A-B\right)\left(2A+B\right)  

c)

(2B+A)(2B−A)\left(2B+A\right)\left(2B-A\right)  

d)

A2−2AB+B2A^2-2AB+B^2  

71.

(A+B)2=?\left(A+B\right)^2=?  

a)

A2+2AB+B2A^2+2AB+B^2  

b)

A2−2AB+B2A^2-2AB+B^2  

c)

(A+B)(A−B)\left(A+B\right)\left(A-B\right)  

d)

A2+B2A^2+B^2  

72.

Chọn đáp án đúng để điền vào chỗ chấm:

(A+B)3=...............................\left(A+B\right)^3=...............................  

a)

A3+B3A^3+B^3  

b)

A3−3A2B+3AB2−B3A^3-3A^2B+3AB^2-B^3  

c)

A3+3A2B+3AB2+B3A^3+3A^2B+3AB^2+B^3  

d)

A3+B3 +3ABA^3+B^{3\ }+3AB  

73.

Chọn đáp án đúng để điền vào chỗ chấm:

(A−B)3=.....................................\left(A-B\right)^3=.....................................  

a)

A3+3A2B+3AB2+B3A^3+3A^2B+3AB^2+B^3  

b)

A3−3A2B−3AB2−B3A^3-3A^2B-3AB^2-B^3  

c)

A3−3A2B+3AB2−B3A^3-3A^2B+3AB^2-B^3  

d)

A3−B3A^3-B^3  

74.

Chọn đáp án đúng để điền vào chỗ chấm:

(x+3)2=......................\left(x+3\right)^2=......................  

a)

x2+9x^2+9  

b)

x2+6x+9x^2+6x+9  

75.

Chọn đáp án đúng để điền vào chỗ chấm:

(2x−1)2=..............................\left(2x-1\right)^2=..............................  

a)

4x2−4x+14x^2-4x+1  

b)

4x2+4x−14x^2+4x-1  

76.

(3−2x)2=\left(3-2x\right)^2=  

a)

9−6x+4x29-6x+4x^2  

b)

9+12x+4x29+12x+4x^2  

c)

4x2−12x+94x^2-12x+9  

d)

9−12x+x29-12x+x^2  

77.

(x + y)(x - y) =

a)

x2+a2x^2+a^2  

b)

  x2+2xy+y2x^2+2xy+y^2

c)

x2−y2x^2-y^2  

d)

x2+y2x^2+y^2  

78.

Kết quả rút gọn

(3−2x)(3+2x) \left(3-2x\right)\left(3+2x\right)\  là bao nhiêu

a)

9+4x29+4x^2  

b)

9−4x29-4x^2  

c)

9−12x +4x29-12x\ +4x^2  

d)

9+12x+4x29+12x+4x^2  

79.

Viết biểu thức sau dưới dạng bình phương của một tổng hoặc một hiệu:

x2 − x +14 =x^2\ -\ x\ +\frac{1}{4}\ =  

a)

(x−12)2\left(x-\frac{1}{2}\right)^2  

b)

(x+12)2\left(x+\frac{1}{2}\right)^2  

c)

(x−12)(x+12)\left(x-\frac{1}{2}\right)\left(x+\frac{1}{2}\right)  

d)

x2−(12)2x^2-\left(\frac{1}{2}\right)^2  

80.

Tıˊnh (x2−y)(x2+y) =?Tính\ \left(\frac{x}{2}-y\right)\left(\frac{x}{2}+y\right)\ =?  

a)

(x2−y)2\left(\frac{x}{2}-y\right)^2  

b)

(x2+y)2\left(\frac{x}{2}+y\right)^2  

c)

x22−y2\frac{x^2}{2}-y^2  

d)

x24−y2\frac{x^2}{4}-y^2  

81.

(a + b)2 - 4ab=.....

a)

(a - b)2

b)

(a + b)2

c)

(a -2b)2

d)

(a + 2b)2

82.

9x2 - 6x +1 =

a)

(x - 3)2

b)

(3x + 1)2

c)

(x + 3)2

d)

(3x -1)2

83.

Viết thành bình phương của một tổng 16y 2 + 32yz + 16z 2 =….

a)

(4y + 4z) 2

b)

(16y + 16z) 2

c)

(4y + 16z) 2

d)

(16y + 4z) 2

84.

Viết thành bình phương của một hiệu ứng a 2 - 4ab + 4b 2 = .......

a)

(a - 4b) 2

b)

(a - 2b) 2

c)

(a + 2b) 2

d)

(a + 4b) 2

85.

Kết quả rút gọn

(3−2x)(3+2x) \left(3-2x\right)\left(3+2x\right)\ là bao nhiêu

a)

9+4x29+4x^2

b)

9−4x29-4x^2

c)

9−12x +4x29-12x\ +4x^2

d)

9+12x+4x29+12x+4x^2

86.

Khai triển sau biểu thức:

(3−x2)2\left(3-x^2\right)^2 =

a)

32 − (x2)23^{2\ }-\ \left(x^2\right)^2

b)

(3−x2)(3+x2)\left(3-x^2\right)\left(3+x^2\right)

c)

9+6x2 +x49+6x^{2\ }+x^4

d)

9−6x2 +x49-6x^{2\ }+x^4

87.

x 2 + 12x + 36 =

a)

(6 + x) 2

b)

(x + 36) 2

c)

(x + 3) (x + 4)

d)

x (x + 12) - 36

88.

9x 2 - 6x +1 =

a)

(x - 3) 2

b)

(3x + 1) 2

c)

(x + 3) 2

d)

(3x -1) 2

89.

(2x−1)2= (a)<spanclass=\left(2x-1\right)^2=\ (a) <span class=  

90.

25x2−... =(5x−3)(5x+3)25x^2-...\ =\left(5x-3\right)\left(5x+3\right)  

(a)  

91.

(2x+12)2=\left(2x+\frac{1}{2}\right)^2=  

a)

2x2+x+122x^2+x+\frac{1}{2}  

b)

4x2+4x+124x^2+4x+\frac{1}{2}  

c)

4x2+2x+144x^2+2x+\frac{1}{4}  

d)

2x2+x+142x^2+x+\frac{1}{4}  

92.

4x2y4 - 12xy2 + 9

a)

(2x2y2 + 3)2

b)

(2xy2 - 3)2

c)

(2xy2 - 3)(2xy2 + 3)

d)

(2xy2 + 3)3

93.

Hãy chọn câu đúng :

a)

x2+y2=(x+y)2x^2+y^2=\left(x+y\right)^2

b)

(x+y)2=−(y+x)2\left(x+y\right)^2=-\left(y+x\right)^2

c)

(x−y)2=(y−x)2\left(x-y\right)^2=\left(y-x\right)^2

d)

(x−y)3=(y−x)3\left(x-y\right)^3=\left(y-x\right)^3

94.

9x2−6x+1=(... x −1)29x^2-6x+1=\left(...\ x\ -1\right)^2  

(a)  

95.

16x2−81 = ?16x^2-81\ =\ ?  

a)

(4x−9)(4x+9)\left(4x-9\right)\left(4x+9\right)  

b)

(9x−4)(9x+4)\left(9x-4\right)\left(9x+4\right)  

c)

(9x−4)2\left(9x-4\right)^2  

d)

(9x+4)2\left(9x+4\right)^2  

96.

Chọn đáp án đúng để điền vào chỗ chấm:

(x+3)2=x2 +(a)<spanclass=\left(x+3\right)^2=x^2\ + (a) <span class=  

97.

(x + y)(x - y) =

a)

x2+a2x^2+a^2  

b)

  x2+2xy+y2x^2+2xy+y^2

c)

x2−y2x^2-y^2  

d)

x2+y2x^2+y^2  

98.

x2=0x^2=0

(a)  

99.

x2=1x^2=1

(a)  

100.

x2=4x^2=4

(a)  

101.

x2=9x^2=9

(a)  

102.

x2=16x^2=16

(a)  

103.

x2=25x^2=25

(a)  

104.

x2=36x^2=36

(a)  

105.

x2=49x^2=49

(a)  

106.

x2=64x^2=64

(a)  

107.

x2=81x^2=81

(a)  

108.

x2=100x^2=100

(a)  

109.

x2=121x^2=121

(a)  

110.

x2=144x^2=144

(a)  

111.

(x+y)2\left(x+y\right)^2

a)

x2+2xy+y2x^2+2xy+y^2

b)

x2−2xy+y2x^2-2xy+y^2

c)

x2+xy+y2x^2+xy+y^2

d)

x2+y2x^2+y^2

e)

x2−xy+y2x^2-xy+y^2

112.

(x−y)2\left(x-y\right)^2

a)

x2+2xy+y2x^2+2xy+y^2

b)

x2−2xy+y2x^2-2xy+y^2

c)

x2+xy+y2x^2+xy+y^2

d)

x2−y2x^2-y^2

e)

x2−xy+y2x^2-xy+y^2

113.

(x+y)(x−y)\left(x+y\right)\left(x-y\right)

a)

x2+2xy+y2x^2+2xy+y^2

b)

x2−2xy+y2x^2-2xy+y^2

c)

x2+xy+y2x^2+xy+y^2

d)

x2−y2x^2-y^2

e)

x2−xy+y2x^2-xy+y^2

114.

(x+y)3\left(x+y\right)^3

a)

x3+3x2y+3xy2+y3x^3+3x^2y+3xy^2+y^3

b)

x3−3x2y+3xy2−y3x^3-3x^2y+3xy^2-y^3

c)

(x+y)(x2−xy+y2)\left(x+y\right)\left(x^2-xy+y^2\right)

d)

(x−y)(x2+xy+y2)\left(x-y\right)\left(x^2+xy+y^2\right)

115.

(x−y)3\left(x-y\right)^3

a)

x3+3x2y+3xy2+y3x^3+3x^2y+3xy^2+y^3

b)

x3−3x2y+3xy2−y3x^3-3x^2y+3xy^2-y^3

c)

(x+y)(x2−xy+y2)\left(x+y\right)\left(x^2-xy+y^2\right)

d)

(x−y)(x2+xy+y2)\left(x-y\right)\left(x^2+xy+y^2\right)

116.

(x+y)(x2−xy+y2)\left(x+y\right)\left(x^2-xy+y^2\right)

a)

x3+3x2y+3xy2+y3x^3+3x^2y+3xy^2+y^3

b)

x3−3x2y+3xy2−y3x^3-3x^2y+3xy^2-y^3

c)

x3+y3x^3+y^3

d)

x3−y3x^3-y^3

117.

(x−y)(x2+xy+y2)\left(x-y\right)\left(x^2+xy+y^2\right)

a)

x3+3x2y+3xy2+y3x^3+3x^2y+3xy^2+y^3

b)

x3−3x2y+3xy2−y3x^3-3x^2y+3xy^2-y^3

c)

x3+y3x^3+y^3

d)

x3−y3x^3-y^3

118.

x2−y2x^2-y^2

a)

(x+y)(x2−xy+y2)\left(x+y\right)\left(x^2-xy+y^2\right)

b)

(x−y)(x2+xy+y2)\left(x-y\right)\left(x^2+xy+y^2\right)

c)

(x−y)2\left(x-y\right)^2

d)

(x+y)(x−y)\left(x+y\right)\left(x-y\right)

119.

x3−y3x^3-y^3

a)

(x+y)(x2−xy+y2)\left(x+y\right)\left(x^2-xy+y^2\right)

b)

(x−y)(x2+xy+y2)\left(x-y\right)\left(x^2+xy+y^2\right)

c)

(x−y)3\left(x-y\right)^3

d)

(x+y)(x−y)\left(x+y\right)\left(x-y\right)

120.

x3+y3x^3+y^3

a)

(x+y)(x2−xy+y2)\left(x+y\right)\left(x^2-xy+y^2\right)

b)

(x−y)(x2+xy+y2)\left(x-y\right)\left(x^2+xy+y^2\right)

c)

(x+y)3\left(x+y\right)^3

d)

(x+y)(x−y)\left(x+y\right)\left(x-y\right)

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