Question

Determine the value of the discriminant and then state the nature of the roots.
x^2-8x-9=0

root 28 is the discriminant
2 different roots is the nature of the roots

Is that correct?

Thanks a ton! :)

Answer 1

64 - 4*-9 = 100
the discriminant is what is under the square root sign, b^2-4ac

yes, roots are 9 and -1

Answer 2

The Discriminant is greater than zero(100); therefore, we have 2 real roots.