(m-n)(5ax+ay-1)-(n-m)(3ay+ax+1)
问题描述：
(m-n)(5ax+ay-1)-(n-m)(3ay+ax+1)
答
(m-n)(5ax+ay-1)-(n-m)(3ay+ax+1)
=（m-n）(5ax+ay-1+3ay+ax+1)
=(m-n)(6ax+4ay)答案是2a（m-n)(3x+2y)诶、、、=(m-n)(6ax+4ay) 是不是还可以分解，(m-n)(5ax+ay-1)-(n-m)(3ay+ax+1) =（m-n）(5ax+ay-1+3ay+ax+1) =(m-n)(6ax+4ay)=2a(m-n)(3x+2y)