Question

3x^2+5x-2=0  уравнения

Answer 1

$3 x^{2} +5 x-2=0 \ D=49 \ sqrt{D} =7 \ x_{1} = frac{1}{3} \ x_{2} =-2$

Answer 2

3x^2+6x-x-2=0
3x(x+2)-(x+2)=0
(x+2)(3x-1)=0
[x+2=0     x=-2
[3x-1=0     x=1/3
_____________________________
Удачи!