# Precalculus Examples

,

Divide each term in by .

Reduce the expression by cancelling the common factors.

Cancel the common factor.

Divide by .

Divide by .

Add to both sides of the equation.

Add and .

Take the square root of both sides of the equation to eliminate the exponent on the left side.

First, use the positive value of the to find the first solution.

Next, use the negative value of the to find the second solution.

The complete solution is the result of both the positive and negative portions of the solution.

The interval does not contain . It is not part of the final solution.

is not on the interval

The interval contains .

The result can be shown in multiple forms.

Exact Form:

Decimal Form: