Question

Решить уравнение
2x^{2} +2x−4=0.

Answer 1

Ответ:

$2 {x}^{2} + 2x - 4 = 0$

D=2²-4*2*(-4)=4+32=36

$x1 = \frac{ - 2 - 6}{2 \times 2} = \frac{ - 8}{4} = - 2$

$x2 = \frac{ - 2 + 6}{2 \times 2} = \frac{4}{4} = 1$