2022年中考数学专题：整式的乘法与因式分解（一）

$5a^2-4a^2=1$

${(-a^2{b}^3)}^2=a^4{b}^6$

$a^9÷a^3=a^3$

${(a-2b)}^2=a^2-4b^2$

$2x{(x-1)}^2$

$2x{(x+1)}^2$

$x{(2x-1)}^2$

$x{(2x+1)}^2$

$x^2+x^3=x^5$

${(-a-b)}^2=a^2+2\mathit{ab}+b^2$

${\left(3x^3\right)}^2=6x^6$

$\sqrt{2}+\sqrt{3}=\sqrt{5}$

2

$\frac{5}{2}$

3

$\frac{9}{2}$

$3\mathit{mn}-2\mathit{mn}=1$

${\left(m^2{n}^3\right)}^2=m^4{n}^6$

${(-m)}^3\cdot m=m^4$

${(m+n)}^2=m^2+n^2$

$a^6$

$-a^6$

$a^8$

$-a^8$

$a^2$

$-a^2$

$a^4$

$-a^4$

$a^3\cdot a^3=2a^3$

${(-2a)}^2=4a^2$

${(a+b)}^2=a^2+b^2$

$(a+2)(a-2)=a^2-2$

$(1-2y)(1+2y)$

$(2-y)(2+y)$

$(1-2y)(2+y)$

$(2-y)(1+2y)$

$a+a^2=a^3$

${\left(2a^2\right)}^3=2a^6$

$a^6÷a^2=a^3$

$a^3\cdot a^2=a^5$