Incorrect. Distributing the negative sign to all numbers in the second parentheses would result in this expression: $\displaystyle{24}{p}{y}-{8}{{y}}^{{3}}-{13}{{q}}^{{2}}-{2}{p}{y}+{15}{{y}}^{{3}}-{17}{{q}}^{{2}}\usepackage{cmbright}\Huge\$ . After distributing the negative sign, add or subtract each set of like terms.