What is the discrimenant?

Answer 1

The discriminant is the part of the quadratic formula which shows whether you will have two real roots, one real root, or no real roots.

X = -b +/- sqrt(b^2-4ac)/2a

just use the part under the radical as the discriminant

b^2 - 4ac

of the answer is;

answer > 0-----then two real roots

answer = 0-----then one real root

answer > 0-----then no real roots