(2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y)
问题描述:
(2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y)
答
(2x+y)(2x-3y)+x(2y+y)
=(2y+y) (2x-3y+x)
=(2y+y) (3x-3y)
=3(2y+y) (x-y)
2a(x-y)-4b(x-y)
=2(x-y)(a-2b)