(x+2)(x-12)-2(x+5)(x-1)怎么算
问题描述：
(x+2)(x-12)-2(x+5)(x-1)怎么算
答
(x+2)(x-12)-2(x+5)(x-1)
=x²-10x-24-2x²-8x+10
=-x²-18x-14
如追加其它问题,采纳本题后点击想我求助,