# Precalculus Examples

Step 1

Subtract from both sides of the equation.

Step 2

Step 2.1

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

Step 2.2

Consider the vertex form of a parabola.

Step 2.3

Find the value of using the formula .

Step 2.3.1

Substitute the values of and into the formula .

Step 2.3.2

Cancel the common factor of and .

Step 2.3.2.1

Factor out of .

Step 2.3.2.2

Cancel the common factors.

Step 2.3.2.2.1

Factor out of .

Step 2.3.2.2.2

Cancel the common factor.

Step 2.3.2.2.3

Rewrite the expression.

Step 2.3.2.2.4

Divide by .

Step 2.4

Find the value of using the formula .

Step 2.4.1

Substitute the values of , and into the formula .

Step 2.4.2

Simplify the right side.

Step 2.4.2.1

Simplify each term.

Step 2.4.2.1.1

Cancel the common factor of and .

Step 2.4.2.1.1.1

Factor out of .

Step 2.4.2.1.1.2

Cancel the common factors.

Step 2.4.2.1.1.2.1

Factor out of .

Step 2.4.2.1.1.2.2

Cancel the common factor.

Step 2.4.2.1.1.2.3

Rewrite the expression.

Step 2.4.2.1.1.2.4

Divide by .

Step 2.4.2.1.2

Multiply by .

Step 2.4.2.2

Subtract from .

Step 2.5

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

Step 3

Substitute for in the equation .

Step 4

Move to the right side of the equation by adding to both sides.

Step 5

Step 5.1

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

Step 5.2

Consider the vertex form of a parabola.

Step 5.3

Find the value of using the formula .

Step 5.3.1

Substitute the values of and into the formula .

Step 5.3.2

Cancel the common factor of and .

Step 5.3.2.1

Factor out of .

Step 5.3.2.2

Cancel the common factors.

Step 5.3.2.2.1

Factor out of .

Step 5.3.2.2.2

Cancel the common factor.

Step 5.3.2.2.3

Rewrite the expression.

Step 5.3.2.2.4

Divide by .

Step 5.4

Find the value of using the formula .

Step 5.4.1

Substitute the values of , and into the formula .

Step 5.4.2

Simplify the right side.

Step 5.4.2.1

Simplify each term.

Step 5.4.2.1.1

Raise to the power of .

Step 5.4.2.1.2

Multiply by .

Step 5.4.2.1.3

Divide by .

Step 5.4.2.1.4

Multiply by .

Step 5.4.2.2

Subtract from .

Step 5.5

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

Step 6

Substitute for in the equation .

Step 7

Move to the right side of the equation by adding to both sides.

Step 8

Step 8.1

Add and .

Step 8.2

Add and .