Question

What is the discriminant of the quadratic equation 0 = 2x2 + 3x – 5?

Answer 1

ANSWER

The discriminant is

$D. 49$

EXPLANATION

The given equation is

$0 = 2 {x}^{2} + 3x - 5$
We can rewrite this as,


$2 {x}^{2} + 3x - 5 = 0$

When we compare this to the general quadratic equation, we obtain;


$a=2,b=3,c=-5$

The discriminant is given by,

$D = {b}^{2}-4ac$

We substitute the values to obtain,


$D = {3}^{2}-4(2)( - 5)$

$D = 9 + 40$

We simplify to get,

$D = 49$

Hence the correct answer is D.

Answer 2

49 would be the answer!