Complete the calculation to find the product:

$\displaystyle{\left({x}+{7}\right)}{\left({{x}}^{{2}}+{2}{x}+{4}\right)}={x}{\left({{x}}^{{2}}+{2}{x}+{4}\right)}+{7}{\left({{x}}^{{2}}+{2}{x}+{4}\right)}\usepackage{cmbright}\Huge\$

$\displaystyle={x}{\left({{x}}^{{2}}\right)}+{x}{\left({2}{x}\right)}+{x}{\left({4}\right)}+{7}{\left({{x}}^{{2}}\right)}+{7}{\left({2}{x}\right)}+{7}{\left({4}\right)}\usepackage{cmbright}\Huge\$