Incorrect. In the equation $\displaystyle{{x}}^{{2}}+{5}{x}+{5}={0}\usepackage{cmbright}\Huge\$ , the coefficients can be represented by the following variables: $\displaystyle{a}={1},{b}={5},\usepackage{cmbright}\Huge\$ and $\displaystyle{c}={5}\usepackage{cmbright}\Huge\$ . Substitute these values into the quadratic formula, $\displaystyle{x}=\frac{{-{b}\pm\sqrt{{{{b}}^{{2}}-{4}{a}{c}}}}}{{{2}{a}}}\usepackage{cmbright}\Huge\$ , and simplify.