# Precalculus Examples

Replace with to find the properties of the parabola.

Use the form , to find the values of , , and .

Consider the vertex form of a parabola.

Substitute the values of and into the formula .

Simplify the right side.

Reduce the expression by cancelling the common factors.

Factor out of .

Cancel the common factors.

Cancel the common factor.

Rewrite the expression.

Reduce the expression by cancelling the common factors.

Factor out of .

Cancel the common factors.

Factor out of .

Cancel the common factor.

Rewrite the expression.

Divide by .

Find the value of using the formula .

Simplify each term.

Raising to any positive power yields .

Multiply by .

Divide by .

Multiply by .

Add and .

Substitute the values of , , and into the vertex form .