Question

4(x+y)的平方-(x-y)的平方 因式分解

Answer 1

4(x+y)的平方-(x-y)的平方
= (2x+2y)^2 - (x-y)^2
= (2x+2y+x-y)( (2x+2y-x+y)
= (3x+y)(x+3y(

Answer 2

4(x+y)的平方-(x-y)的平方
= (2x+2y)²- (x-y)²
= (2x+2y+x-y)(2x+2y-x+y)
= (3x+y)(x+3y）

追问

谢谢 可以再问一道题嘛？》？

Answer 3

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

追问

谢谢 可以再帮忙一道题嘛？？x的平方y-xy平方+x的立方-y的立方

追答

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