Distributing the term $\displaystyle{{x}}^{{2}}\usepackage{cmbright}\Huge\$ through the polynomial $\displaystyle{2}{{x}}^{{2}}+{3}{x}+{1}\usepackage{cmbright}\Huge\$ , you find $\displaystyle{{x}}^{{2}}{\left({2}{{x}}^{{2}}\right)}+{{x}}^{{2}}{\left({3}{x}\right)}+{{x}}^{{2}}{\left({1}\right)}={2}{{x}}^{{4}}+{3}{{x}}^{{3}}+{{x}}^{{2}}\usepackage{cmbright}\Huge\$ .