Question: Express the improper rational function as the sum of a polynomial and a proper rational function: \(\frac{3\,{{x}^{\,4}}\quad -\quad {{x}^{\,3}}\quad -\quad 33\,{{x}^{\,2}}\quad -\quad 25\,x\quad -\quad 61}{{{x}^{\,2}}\quad -\quad x\quad -\quad 12}\)