Question

в) -3 $x^{2}$ - 2х + 5 =0

Answer 1

-3x²-2x+5=0|*(-1)
3x²+2x-5=0
D=4+60=64
√D=8
$x_{1}=frac{-2-8}{6}=-frac{5}{3}=-1frac{2}{3} \ \ x_{2}=1$
Ответ: $-1frac{2}{3};1.$