Question

Help!!!Given the following quadratic find the discriminant.

2x^2+5x+9=0

Answer 1

To determine what the discriminant is simply use the following formula.

D = b^2 - 4ac
D = (5)^2 - 4(2)(9)
D = 25 - 72
D = -47.

Basically use the equation in the square root, or under true square root of the quadratic function to find the discriminant.