Question

Calculate the discriminant: 5x² + 2x − 2 = 0

Answer 1

The quadratic formula is b squared -4 (ac)
So we substitute 2 squared -4 (5•-2)

Which the answer would be 44

Answer 2

44

Explanation:

The equation is of the form a x ²+bx +c = 0 where

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

The Discriminant is given by:

Δ= b²− 4 * a * c

= (−2²)− ( 4 * 5 * ( − 2 ) )

= 4 + 40

= 44