Question

помогите решить уравнение 2х2+3х-5=0

Answer 1

2x^2 + 3x - 5 = 0
D = b2 - 4ac
D = 9 + 40 = 49 = 7^2

x1,2 = -b ± √D/2a
x1 = -3 + 7/4 = 4/4 = 1
x2 = -3 - 7/4 = - 10/4 = - 5/2
Ответ: x1 = 1 ; x2 = - 5/2