问题描述:
求答案
解:
(2x-1)(x-3)-2(x-1)2
=2x2-6x-x+3-2(x2-2x+1)
=2x2-7x+3-2x2+4x-2
=-3x+1
上一篇:my, must, bag, i, find 连词成句
下一篇:暂无