(2x+y)∧2-(x+2y)∧2
问题描述:
(2x+y)∧2-(x+2y)∧2
答
原式=(2x+y+x+2y)(2x+y-x-2y)
=(3x+3y)(x-y)
=3(x+y)(x-y)
纯手打~求采纳>