Question

Решите уравнение
5X^2 + 9X - 2 = 0

Answer 1

D=81+40=121
x1=(-9+11)/10=1/5
x2=(-9-11)/10=-2

Answer 2

Решение:
$5 {x}^{2} + 9x - 2 = 0 \ d = 81 - 4 times 5 times ( - 2) = 121 \ x1 = frac{ - 9 + 11}{10} = 0.2 \ x2 = frac{ - 9 - 11}{10} = - 2$
Ответ: 0,2 и -2