Asked by John

Factor pls show me steps thank u! (X-1)(x+2)^2-(x-1)^2(x+2)
Answered by Reiny
= (x-1)(x+2) [ (x+2) - (x-1) ]
= (x-1)(x+2)(x+2-x+1)
= 3(x-1)(x+2)