This week in Pre-Calc we learned about discriminants. A discriminant gives information about the roots of the quadratic equation. We use to find the value.

• If it is less than 0, there are no real roots.
• If it is equal to 0, there’s one real root.
• If it is greater than, 0 there are two real roots.

Ex:

a=2, b=-7 c=3

step 1:

step 2:

step 3:

The discriminant is 25, because it is greater than 0, this means that this quadratic equation has two real roots.