# Week 7 PreCalc 11

This week we looked a the discriminant and how to find how many roots there will be and what kind of root it will be.

You would need to use the equation $b^2$-4ac.

If the discriminant is above 0 then it will have 2 roots and be considered a distinct root, a real root and a rational/irrational root. If the discriminant is equal to 0 then it will have 1 root and will be considered as a equal root and a real root. If the discriminant is below zero then it will have 0 roots and will be considered to have no roots.

Ex: