(2x-y )平方-4x+2y-3
问题描述:
(2x-y )平方-4x+2y-3
答
(2x-y )平方-4x+2y-3=(2x-y )平方-2(2x-y)-3=(2x-y-3)(2x-y+1)
答
(2x-y )平方-4x+2y-3
=(2x-y-3)(2x-y+1)