0. Review of College Algebra

Find the domain of each rational expression. See Example 1. (3x + 7) / (4x + 2) (x - 1)

Simplify each complex fraction. See Examples 5 and 6. [ (−4/3) + 12/5 ] / [ 1 − (−4/3)(12/5) ]

Find the square of each radical expression. See Example 2. √2 /3

Add or subtract, as indicated. See Example 4. (1/(x + z)) + (1/(x - z))

Rationalize the denominator. 

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

Rationalize the denominator and simplify the radical expression.

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

Find the square of each radical expression. See Example 2. -√19