Though the exponents are 6 and 5, the second term is $\displaystyle-{2}{{x}}^{{5}}\usepackage{cmbright}\Huge\$ , not $\displaystyle{2}{{x}}^{{5}}\usepackage{cmbright}\Huge\$ , so it has a coefficient of $\displaystyle-{2}\usepackage{cmbright}\Huge\$ . The correct answer is: The coefficients are 7 and $\displaystyle-{2}\usepackage{cmbright}\Huge\$ . The exponents are 6 and 5.