Question

(0, .5x > 2; -3x = -9​

Answer 1

Ответ:

5x^2 - 22x + 8 = 0

D = 22^2 - 4*5*8 = 484 - 160 = 324 = 18^2

x1 = (22 + 18)/(2*5) = 40/10 = 4

x2 = (22 - 18)/(2*5) = 4/10 = 0,4