Question

${x}^{2} - 35 = 2x$
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Answer 1

${x}^{2} - 35 = 2x \\ {x}^{2} - 2x - 35 = 0 \\ D = {( - 2)}^{2} + 4 \times 35 = {12}^{2} \\ \left[ \begin{gathered} x_{1} = \frac{2 + 12}{2} = 7 \\ x_{2} = \frac{2 - 12}{2} = - 5 \end{gathered \right.$

Ответ: -5; 7.