4x^2(x一y)十(y一x)
问题描述:
4x^2(x一y)十(y一x)
答
原式
=(x-y)(4x^2-1)
=(x-y)(2x+1)(2x-1)
4x^2(x一y)十(y一x)
原式
=(x-y)(4x^2-1)
=(x-y)(2x+1)(2x-1)