Question: In which step did Mitchell make an error? [begin{aligned} 5(x-2)^2+6&=86 5(x-2)^2&=80&text{Step }1 (x-2)^2&=16&text{Step }2 x^2-2^2&=16&text{Step }3 x^2&=20&text{Step }4 x&=pmsqrt{20}&text{Step }5

In which step did Mitchell make an error? \[\begin{aligned} 5(x-2)^2+6&=86 \\\\ 5(x-2)^2&=80&\text{Step }1 \\\\ (x-2)^2&=16&\text{Step }2 \\\\ x^2-2^2&=16&\text{Step }3 \\\\ x^2&=20&\text{Step }4 \\\\ x&=\pm\sqrt{20}&\text{Step }5 \end{aligned}\]

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