Question

Find the discriminant and the number of real roots for this equation.
x2 + 2x + 7 = 0

Answer 1

Discriminant = -24

No real roots.

Explanation:

x^2 + 2x + 7 = 0

The discriminant = b^2 - 4ac

= 2^2 - 4*1*7

= -24

So there are no real roots.