Question

Решите уравнение очень нужно

Answer 1

$frac{x {}^{2} - 2x}{x - 7} = frac{35}{ x - 7}$

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

$x {}^{2} - 2x - 35 = 0$

$d = {2}^{2} - 4 times ( - 35) = 144 = {12}^{2}$

$x_{1} = frac{2 - 12}{2} = - 5$

$x_{2} = frac{2 + 12}{2} = 7$