0. Review of Algebra

Simplify each expression. See Example 1. (-8t³)(2t⁶)(-5t⁴)

Simplify each expression. Write answers without negative exponents. Assume all vari-ables represent nonzero real numbers. See Examples 5 and 6. 4⁸/4⁶

Simplify each expression. Write answers without negative exponents. Assume all vari-ables represent nonzero real numbers. See Examples 5 and 6. x¹²/x⁸

Simplify each expression. Write answers without negative exponents. Assume all vari-ables represent nonzero real numbers. See Examples 5 and 6. r⁷/r¹⁰

Write each expression without negative exponents, and evaluate if possible. Assume all variables represent nonzero real numbers. See Example 4. (-4)^-3

Simplify each expression. Write answers without negative exponents. Assume all vari-ables represent nonzero real numbers. See Examples 5 and 6. (5x)^-2(5x³)^-3/(5^-2x^-3)^-3

Determine whether each statement is true or false. If false, correct the right side of the equation. 5^-2 = 1/5²

Perform the indicated operation, and write each answer in lowest terms. 2x/5 + x/4

Find the domain of each rational expression. (x + 3) / (x - 6)

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

Find the domain of each rational expression. (3x + 7) / (4x + 2)(x - 12)

Find the domain of each rational expression. 12/ (x² + 5x + 6)