Question

Решительно неравенство x²-3x<10

Answer 1

x^2 - 3x - 10 = 0
D = (-3)^2 -4 * 1 * (-10) = 9 + 40 = 49
X1 = 3 + 7/2 = 10/2 = 5
X2 = 3 -7/2 = -4/2 = -2