Incorrect. Because $\displaystyle{a}={2}\usepackage{cmbright}\Huge\$ , the first term will be $\displaystyle{2}{{x}}^{{2}}\usepackage{cmbright}\Huge\$ . Rewrite the equation so that the right side is equal to 0. Then the left side will have the term $\displaystyle{2}{{x}}^{{2}}\usepackage{cmbright}\Huge\$ . The value of b is then the coefficient of the x term. The correct answer is 5.