Quadratics by taking square roots: strategy

Meredith solved a quadratic equation. Her work is shown below. **In which step did Meredith make an error?** $\begin{align} 2(x+4)^2&=242 \\\\ (x+4)^2&=121&\text{Step }1 \\\\ x+4&=11&\text{Step }2 \\\\ x&=7&\text{Step }3 \end{align}$ [[☃ radio 1]]