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ON TAP HKI - TOAN 8

Authored by Nguyen Phuong

Mathematics

9th Grade

Used 26+ times

ON TAP HKI - TOAN 8
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12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Kết quả khai triển hằng đẳng thức (x + 2)2 = ..................................

x2 + 4x + 4

x2 + 2x + 4

x2 + 2x + 2

x2 + x + 4

2.

MULTIPLE CHOICE QUESTION

5 sec • 1 pt

Hoàn chỉnh đẳng thức sau: x2 – 81= (x – 9).(.............)

x + 81

x - 81

x - 9

x + 9

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kết quả phép tính chia (6x6 – 2x4):2x2 = ........................

2x4 – x2

3x4 – x2

3x3 – x2

3x4 – 3x

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kết quả phép nhân 2x2.(x3 + 1) = ......................

2x6 + 2x2

2x5 + 2

2x5 + 2x2

2x6 + 2

5.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Rút gọn phân thức x2(1 + x)x(x+1) = ...............\frac{x^2\left(1\ +\ x\right)}{x\left(x+1\right)}\ =\ ...............

xx

x2x^2

1x\frac{1}{x}

1x2\frac{1}{x^2}

6.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Mẫu thức chung của các phân thức 2x2y5   vaˋ   43x3y2 \frac{2}{x^2y^5}\ \ \ và\ \ \ \frac{4}{3x^3y^2}\ là:

x2y5x^2y^5

x3y5x^3y^5

3x2y53x^2y^5

3x3y53x^3y^5

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Cho hình thang ABCD có AB //CD, biết AB = 6cm, CD = 10cm. Độ dài đường trung bình của hình thang này là: ............

4cm

32cm

8cm

16cm

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