Question

5х(в квадрате)+8х-13


3х(в квадрате)+13х-10

Answer 1

3х^2 + 13x - 10 = 0
D = 169 +120 = 389 = 17^2
x1 = (-13 + 17) / 2 = 4/2 = 2
x2 = (-13 - 17) / 2 = -30/2 = -15