# Precalculus Examples

Step 1

The discriminant of a quadratic is the expression inside the radical of the quadratic formula.

Step 2

Substitute in the values of , , and .

Step 3

Step 3.1

Simplify each term.

Step 3.1.1

Raising to any positive power yields .

Step 3.1.2

Multiply .

Step 3.1.2.1

Multiply by .

Step 3.1.2.2

Multiply by .

Step 3.2

Subtract from .