Question

x - 2x^2 = -17
решите уравнение

Answer 1

$2 {x}^{2} - x - 17 = 0 \\ D = 1 - 4 \times 2 \times ( - 17) = \\ = 1 + 136 = 137 \\ x_{1} = \frac{1 - \sqrt{137} }{4} \\ x_{2} = \frac{1 + \sqrt{137} }{4}$