What is the discriminant of 3x2-10-2

In form

ax^2+bx+c=0

the discriminant is

b^2-4ac

when

1. b^2-4ac>0, the equation has 2 real roots

2. b^2-4ac=0, the equation has 1 real root

3. b^2-4ac<0, the equaton has 2 complex roots

3x^2-10x-2

a=3

b=-10

c=-2

b^2-4ac

(-10) ^2-4 (3) (-2)

100+24

124>0

2 real roots

the discriminant is 124