化简(2x+3y)(x-2y)-(2x+y)(2x-y)
问题描述:
化简(2x+3y)(x-2y)-(2x+y)(2x-y)
答
(2x+3y)(x-2y)-(2x+y)(2x-y)
=2x^2-xy-6y^2-4x^2+y^2
=6x^2-xy-5y^2
=(6x+5y)(x-y)(x-y)²-(x+y)² 分解因式