Rationalize the denominator and simplify the radical expression.

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

Rationalize the denominator and simplify the radical expression.

$\(\frac{2-\sqrt3}{2+\sqrt3}\)$

CONCEPT PREVIEW Perform the operations mentally, and write the answers without doing intermediate steps. √25 + √64

CONCEPT PREVIEW Perform the operations mentally, and write the answers without doing intermediate steps. √6 • √6

Find each square root. See Example 1. √100

Find each square root. See Example 1. -√256

Find each square root. See Example 1. √4⁄25

Find each square root. See Example 1. -√144⁄121