Incorrect. First rewrite this problem in the long division format. The first calculation is $\displaystyle\frac{{{7}{{x}}^{{3}}}}{{{x}}^{{2}}}={7}{x}\usepackage{cmbright}\Huge\$ . Put the $\displaystyle{7}{x}\usepackage{cmbright}\Huge\$ on top, then multiply $\displaystyle{7}{x}{\left({{x}}^{{2}}+{2}{x}+{1}\right)}\usepackage{cmbright}\Huge\$ . Write this result below the dividend and subtract. Continue the process through another stage. The correct answer is 13.