Question

The discriminant of the quadratic equation 2x²-5x-1=0 is​

Answer 1

Step-by-step explanation:

(a).x^2 + (b).x + (c) = 0

(2).x^2 + (5).x + (-1) = 0

Hence, a=2, b=5 & c=-1

Therefore, Discriminant D= (b)^2 - 4.(a).(c)

D = (5)^2 - 4.(2).(-1)

D = 25 -(-8)

D = 25 + 8

D = 33