Question

Решите уравнение x = х+15/х+3​

Answer 1

Ответ:

$x + \frac{15}{x} + 3 = 0 \\ x \times x + 15 + 3x = 0\\ {x}^{2} + 3x + 15 = 0 \\ d = {b}^{2} - 4ac = {3}^{2} - 4 \times 1 \times 15 = 9 - 60 = - 51$