X^n+2-4x^n+1+4x^4/x^3-6x^2+12x-8 сократить дробь

Question

X^n+2-4x^n+1+4x^4/x^3-6x^2+12x-8 сократить дробь

Answer 1

Вроде так:
xn+2-4xn+1+4x/1^4/x^3/1-12x+12x-8=2-3xn+1+48-8=-3xn+43