# Precalculus Examples

If is a positive integer that is greater than and is a real number or a factor, then .

Apply the product rule to .

Rewrite as .

Apply the power rule and multiply exponents, .

Write as a fraction with denominator .

Factor out the greatest common factor .

Cancel the common factor.

Rewrite the expression.

Multiply and .

Divide by .

Evaluate the exponent.

Apply the power rule and multiply exponents, .

Combine and .