# Precalculus Examples

Step 1

Use the quadratic formula to find the solutions.

Step 2

Substitute the values , , and into the quadratic formula and solve for .

Step 3

Step 3.1

Simplify the numerator.

Step 3.1.1

Raise to the power of .

Step 3.1.2

Multiply .

Step 3.1.2.1

Multiply by .

Step 3.1.2.2

Multiply by .

Step 3.1.3

Subtract from .

Step 3.1.4

Rewrite as .

Step 3.1.5

Pull terms out from under the radical, assuming positive real numbers.

Step 3.1.6

plus or minus is .

Step 3.2

Multiply by .

Step 3.3

Divide by .

Step 4

The final answer is the combination of both solutions.

Double roots