把(x-1)当作一个因式,合并3(x-1)-2(x-1)-5(x-1)的结果是?

问题描述:

把(x-1)当作一个因式,合并3(x-1)-2(x-1)-5(x-1)的结果是?

(x-1)(3-2-5)
=(1-x)4
=4-4x