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

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

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