Incorrect. Simplify the equation to the form $\displaystyle\sqrt{{{x}+{4}}}=\usepackage{cmbright}\Huge\$ a number, then square both sides of the equation to get $\displaystyle{x}+{4}=\usepackage{cmbright}\Huge\$ a number, then solve for x. Since the radical is an even root, be sure to check that your answer satisfies the equation.