Question

2x^2-9x+9=0 квадратное уравнение

Answer 1

Ответ:

$2x {}^{2} - 9x + 9 = 0 \\ d = b {}^{2} - 4ac = 81 - 4 \times 2 \times 9 = 81 - 42 = 39 \\ x1 = \frac{9 + \sqrt{39} }{4} \\ x2 = \frac{9 - \sqrt{39} }{4}$