Incorrect. This notation tells you to find the product:

$\displaystyle{\left({f{\cdot}}{g}\right)}{\left({x}\right)}={f{{\left({x}\right)}}}\cdot{g{{\left({x}\right)}}}={\left({x}+{1}\right)}{\left({3}{{x}}^{{2}}+{5}{x}\right)}\usepackage{cmbright}\Huge\$

Use FOIL and combine like terms.