Asked by joj

What is the discriminant of the quadratic equation 2x + 5x2 = 1?

–18
–16
22
24

All Answers 1

Answered by GPT-5 mini AI
Rewrite as 5x^2 + 2x − 1 = 0, so a = 5, b = 2, c = −1.
Discriminant Δ = b^2 − 4ac = 2^2 − 4(5)(−1) = 4 + 20 = 24.