求40道初二数学因式分解计算题还有答案(简单点的)
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(2x+1)(x+1)+(2x+1)(x-3)=2(x-1)(2x+1)
2ax^2-3x+2ax-3=(x+1)(2ax-3)
x(y+2)-x-y-1=(x-1)(y+1)
(x^2-3x)+(x-3)^2=(x-3)(2x-3)
9x^2-66x+121=(3x-11)^2
8-2x^2=2(2-x)(2+x)
x^4-1=(x-1)(x+1)(x^2+1)
x^2+4x-xy-2y+4=(x+2)(x-y+2)
4x^2-12x+5=(2x-1)(2x-5)
21x^2-31x-22=(21x+11)(x-2)
4x^2+4xy+y2-4x-2y-3=(2x+y-3)(2x+y+1)
9x^5-35x^3-4x=x(9x^2+1)(x+2)(x-2)
2ax^2-3x+2ax-3=(x+1)(2ax-3)
x(y+2)-x-y-1=(x-1)(y+1)
(x^2-3x)+(x-3)^2=(x-3)(2x-3)
9x^2-66x+121=(3x-11)^2
8-2x^2=2(2-x)(2+x)
x^4-1=(x-1)(x+1)(x^2+1)
x^2+4x-xy-2y+4=(x+2)(x-y+2)
4x^2-12x+5=(2x-1)(2x-5)
21x^2-31x-22=(21x+11)(x-2)
4x^2+4xy+y2-4x-2y-3=(2x+y-3)(2x+y+1)
9x^5-35x^3-4x=x(9x^2+1)(x+2)(x-2)
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