0. Review of College Algebra

Multiply or divide, as indicated. See Example 3. ((x² + x) / 5) • 25 / (xy + y)

Rationalize the denominator. 

$-\(\frac{5}{2\sqrt7}\)$

Rationalize the denominator.

$\(\frac{6+\sqrt{x}\)}{-\(\sqrt{x}\)}$

Rationalize the denominator and simplify the radical expression.

$\(\frac{\sqrt7}{5-\sqrt6}\)$