Question

find the discriminant of the quadratic equation 2x^2-/5x -2=0

Answer 1

Since 2x²-5x-2=0

So

Discriminant D=√b²-4ac

Here a=2

b= -5

c= -2

So D=√25-4×2×(-2)

=√25+16

=√31

Hope it is helpful