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3.2 Properties of Rational Exponents

This review covers the properties of rational exponents in math, including addition, multiplication, subtraction, and simplification of expressions. Examples are provided in both rational exponent and radical form.

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3.2 Properties of Rational Exponents

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  1. 3.2 Properties of Rational Exponents Math 3 Mr. Ellingsen

  2. Review of Properties of Exponents from section 6.1 • am * an = am+n • (am)n = amn • (ab)m = ambm • a-m = • = am-n • = These all work for fraction exponents as well as integer exponents.

  3. 61/2 * 61/3 = 61/2 + 1/3 = 63/6 + 2/6 = 65/6 b. (271/3 * 61/4)2 = (271/3)2 * (61/4)2 = (3)2 * 62/4 = 9 * 61/2 (43 * 23)-1/3 = (43)-1/3 * (23)-1/3 = 4-1 * 2-1 = ¼ * ½ = 1/8 d. = = = Ex: Simplify. (no decimal answers) ** All of these examples were in rational exponent form to begin with, so the answers should be in the same form!

  4. Ex: Simplify. = = = 5 = = = 2 Ex: Write the expression in simplest form. = = = = = = = Can’t have a tent in the basement! ** If the problem is in radical form to begin with, the answer should be in radical form as well.

  5. 5(43/4) – 3(43/4) = 2(43/4) b. = = = c. = = = Ex: Perform the indicated operation If the original problem is in radical form, the answer should be in radical form as well. If the problem is in rational exponent form, the answer should be in rational exponent form.

  6. More Examples a. b. c. d.

  7. Ex: Simplify the Expression. Assume all variables are positive. a. • (16g4h2)1/2 = 161/2g4/2h2/2 = 4g2h c. d.

  8. Ex: Write the expression in simplest form. Assume all variables are positive. a. b. No tents in the basement! c. ** Remember, solutions must be in the same form as the original problem (radical form or rational exponent form)!!

  9. d. Can’t have a tent in the basement!!

  10. Ex: Perform the indicated operation. Assume all variables are positive. a. b. c. d.

  11. e.

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