将3(x-1)的三次方y-(1-x)的三次方z化简.
问题描述:
将3(x-1)的三次方y-(1-x)的三次方z化简.
快
答
3(x-1)^3y-(1-x)^3z
=3(x-1)^3y+(x-1)^3z
=(x-1)^3(3y+z)