(2x-y )平方-4x+2y-3

问题描述:

(2x-y )平方-4x+2y-3

(2x-y )平方-4x+2y-3=(2x-y )平方-2(2x-y)-3=(2x-y-3)(2x-y+1)

(2x-y )平方-4x+2y-3
=(2x-y-3)(2x-y+1)