Rewrite

4x324x230x14x2+5x+3\displaystyle \frac{{-{4}{x}^{{3}}-{24}{x}^{{2}}-{30}{x}-{14}}}{{{x}^{{2}}+{5}{x}+{3}}}

in the form

q(x)+r(x)x2+5x+3\displaystyle {q}{\left({x}\right)}+\frac{{{r}{\left({x}\right)}}}{{{x}^{{2}}+{5}{x}+{3}}}.

4x324x230x14\displaystyle -{4}{x}^{{3}}-{24}{x}^{{2}}-{30}{x}-{14} =\displaystyle = +\displaystyle +
x2+5x+3\displaystyle {x}^{{2}}+{5}{x}+{3} x2+5x+3\displaystyle {x}^{{2}}+{5}{x}+{3}