# Precalculus Examples

Rewrite as .

Since both terms are perfect squares, factor using the difference of squares formula, where and .

Cancel the common factor.

Rewrite the expression.

Rewrite as .

Since both terms are perfect squares, factor using the difference of squares formula, where and .

Cancel the common factor.

Rewrite the expression.

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$\text{}\left[\begin{array}{cc}{x}^{2}\text{}& \text{}\genfrac{}{}{.05ex}{}{1}{2}\text{}\\ \text{}\sqrt{\pi}\text{}& \text{}{\displaystyle \int}xdx\text{}\end{array}\right]\text{}$