Question

Решите уравнение
3x^2-x-1>0

Answer 1

D = b^2 - 4*a*c 
D =  1 - 4*3*(-1) = 13 
x1 = (-b + √D) / 2a
x1 =(1 + √13)/6 
x1 = 0,77
x2 = (-b -√D )/2a
x2 = (1 - √13)/6
x2 = -0,43