x1的3次*x2-x2-x1x2的3次+x1 因式分解

问题描述:

x1的3次*x2-x2-x1x2的3次+x1 因式分解

X1³X2-X2-X1X2³+X1
=X1X2(X1²-X2²)+X1-X2
=X1X2(X1+X2)(X1-X2)+X1-X2
=(X1-X2)(X1²X2+X1X2²+1)