Use the Quadratic Formula to solve the equation $\displaystyle{{x}}^{{2}}+{2}{x}+{1}={12}{x}-{23}\usepackage{cmbright}\Huge\$ .

One solution is $\displaystyle{x}={4}\usepackage{cmbright}\Huge\$ .

The other solution is $\displaystyle{x}=\usepackage{cmbright}\Huge\$ _____.