Question

因式分解(写过程哈.,)1.x的立方-64x2.x的平方-x+1/43.4-12(x-y)+9(x-y)的平方4.x的立

Answer 1

1.x的立方-64x =x(x^2-64)=x(x+8)(x-8)

2.x的平方-x+1/4=(x-1/2)^2

3.4-12(x-y)+9(x-y)的平方

=2^2-2*2*3(x-y)+[3(x-y)]^2

=[2-3(x-y)]^2

=(2-3x+3y)^2

4.x的立方+5x的平方-6x

=x(x^2+5x-6)

=x(x+6)(x-1)