Quiz about 初二第二段大測複習

Question 1

$$a^2+a$$

Accepted Answer

$$a\left(a+1\right)$$

Answer

$$a\left(a-1\right)$$

Answer

$$a\left(a^2+1\right)$$

Answer

$$a\left(a^2-a\right)$$

Question 2

$$x^2-9$$

Accepted Answer

$$\left(x+3\right)\left(x-3\right)$$

Answer

$$\left(x-3\right)^2$$

Answer

$$\left(x+3\right)^2$$

Answer

$$\left(x+9\right)\left(x-9\right)$$

Question 3

$$a^2+a-6$$

Accepted Answer

$$\left(a+3\right)\left(a-2\right)$$

Answer

$$\left(a+2\right)\left(a-3\right)$$

Answer

$$\left(a+1\right)\left(a-6\right)$$

Answer

$$\left(a-1\right)\left(a+6\right)$$

Question 4

$$\frac{8a^3b}{4ab^2}=\frac{?}{b}$$

Accepted Answer

$$2a^2$$

Answer

$$32ab^2$$

Answer

$$4ab$$

Answer

$$2a$$

Question 5

$$\frac{\left(a+b\right)^2}{a^2+ab}=\frac{a+b}{?}$$

Accepted Answer

$$a$$

Answer

$$b$$

Answer

$$\frac{a+b}{a}$$

Answer

$$a-b$$

Question 6

$$\frac{6xy^3}{4x^2y^2}$$

Accepted Answer

$$\frac{3y}{2x}$$

Answer

$$\frac{3}{2x}$$

Answer

$$\frac{2x}{y}$$

Answer

$$\frac{6y}{x}$$

Question 7

$$\frac{y-x}{x^2-xy}$$

Accepted Answer

$$-\frac{1}{x}$$

Answer

$$\frac{y-x}{x\left(x-y\right)}$$

Answer

$$\frac{1}{x}$$

Answer

$$\frac{1}{x+y}$$

Question 8

$$\frac{x-y}{x^2-2xy+y^2}$$

Accepted Answer

$$\frac{1}{x-y}$$

Answer

$$x-y$$

Answer

$$\frac{x+y}{x-y}$$

Answer

$$\frac{1}{x+y}$$

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