Question

Решите уровнение 3x в квадрате +x-30=0

Answer 1

$D= 1^{2} -4*3*(-30)=1+360 x_{1} = frac{-1+19}{6} = frac{18}{6} =3 x_{2} = frac{-1-19}{6} = frac{-20}{6}=-3 frac{2}{6} =-3 frac{1}{3}$