Question

For the quadratic equation 3x² + 2x - 1 = 0 , find the value of the discriminant. 

Answer 1

The given quadratic equation is

3x² + 2x - 1 = 0 

Comparing with ax² + bx + c = 0 , we get

a = 3 , b = 2 , c = -1

Discriminant = Δ = b² - 4ac

= 2² - 4(3)(-1) 

= 4 + 12 

= 16

∴ The value of discriminant is 16.