先化簡再因式分解(X的n+2方+3x的n+1方-6x的n方)÷3x的n-1方

先化簡再因式分解(X的n+2方+3x的n+1方-6x的n方)÷3x的n-1方

(X的n+2方+3x的n+1方-6x的n方)÷3x的n-1方
=x^n-1(X^3 +3x^2-6x)÷3x^ n-1
=1/3x(x^2 +3x-6)
=1/3x(x^2 +3x-6)