Question

помогите пожжжжжжжжжжжжжжжжжжжж​

Answer 1

х^2 - х - 6 = 0

D = 1^2 -4•(-6) = 1 + 24 = 25

√D = √25 = 5

х1 = (1+5)/2 = 6/2 = 3

х2 = (1-5)/2 = -4/2 = -2