ax²-bx²-bx+ax+2b-2a x三次方-1 因式分解

问题描述:

ax²-bx²-bx+ax+2b-2a x三次方-1 因式分解

ax²-bx²-bx+ax+2b-2a
=x²﹙a-b﹚+x﹙a-b﹚-2﹙a-b﹚
=﹙a-b﹚﹙x²+x-2﹚
=﹙a-b﹚﹙x+2﹚﹙x-1﹚
x³-1
=﹙x-1﹚﹙x²+x+1﹚