4x^2-(x-1)^2=0 怎么因式分解到(2x-1)²=0
问题描述:
4x^2-(x-1)^2=0 怎么因式分解到(2x-1)²=0
答
4x^2-(x-1)^2
=(2x)²-(x-1)²
=(2x+x-1)(2x-x+1)
=(3x-1)(x+1)
只能这么因式分解