Free Printable 다항식의 곱셈(1), (2)

1.

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

a)

O

b)

X

2.

$\left(-100-3\right)^2$ 을 계산하면?

a)

9409

b)

-9409

c)

10609

d)

-10609

3.

$\left(a-b\right)^2=a^2+2ab+b^2$

a)

O

b)

X

4.

$102\times98$ 을 계산하면?

a)

9800

b)

9996

c)

9998

d)

10200

5.

다음 중 계산 결과가 틀린 것은?

a)

$\frac{1}{2-\sqrt[]{3}}=2+\sqrt[]{3}$

b)

$\frac{1}{\sqrt[]{5}+\sqrt[]{3}}=\frac{\sqrt[]{5}-\sqrt[]{3}}{2}$

c)

$\frac{4}{\sqrt[]{6}-\sqrt[]{2}}=\frac{\sqrt[]{6}+\sqrt[]{2}}{4}$

d)

$\frac{\sqrt[]{5}-2}{\sqrt[]{5}+2}=9-4\sqrt[]{5}$

6.

$a=\frac{1}{2\sqrt[]{2}-\sqrt[]{7}},\ b=\frac{1}{2\sqrt[]{2}+\sqrt[]{7}}$ 일 때 $a+b$ 의 값을 구하면?

a)

1

b)

$2\sqrt[]{2}$

c)

$4\sqrt[]{2}$

d)

$2\sqrt[]{7}$

7.

다음 중 값이 다른 하나를 고르면?

a)

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

b)

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

c)

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

8.

a)

$-20xy$

b)

$20xy$

c)

$8x^2\ +\ 50y^2$

d)

$-40xy$

e)

$40xy$

9.

다음 중 옳지 않은 것은?

a)

$\left(x+1\right)^2\ =\ x^2+2x\ +\ 1$

b)

$\left(x-5\right)^2\ =\ x^{2\ }-\ 10x\ +\ 25\$

c)

$\left(y\ -\ 6\right)^2\ =\ y^2\ -\ 12y\ +\ 36$

d)

$\left(3x\ +\ 2\right)^{2\ }\ =\ 9x^2\ +24x\ +\ 4$

e)

$\left(2x\ -\ 3\right)\ =\ 4x^2\ -\ 12x\ +\ 9\$

10.

a)

$64$

b)

$46$

c)

$39$

d)

$14$

e)

$4$

11.

a)

6

b)

12

c)

20

d)

24

e)

30

12.

a)

1

b)

2

c)

3

d)

4

e)

5

13.

a)

$-6$

b)

$-5$

c)

$-4$

d)

$1$

e)

$5$

14.

그림에서 길을 제외한 꽃밭의 넓이는?

a)

6ab+8a+9b+12

b)

6ab+4a+3b+2

c)

4a+6

d)

6b+8

다항식의 곱셈(1), (2)

Total questions: 14

Worksheet time: 6mins

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