Question

Решите уравнение
9+12х-5х^2=0
Срочно!!!

Answer 1

9+12x-5x^2=0
12x-10x=-9
2x=-9
x=-9/2
x=-4,5

Answer 2

-5х2 + 12х + 9 = 0

х1 + х2 = 2.4

х1 * х2 = -1.8

х1 = -0.6

х2 = 3