8.2.1 Radical Expressions and Rational Exponents - Practice
1. Find all of the real fourth roots of − 81.
2. Simplify the expression. (8) 1/3 (8) 4/3
4. Simplify the expression. ( − 125) 4/3
3. Simplify the expression. x x 4 7 4 5 ⋅
6. The voltage V across a capacitor at time t seconds is given by V v 146.3 1 2.72 t 0.41 = . What is the voltage across the capacitor at 8 seconds to the nearest hundredth?
5. Write the expression using rational exponents. 17 4 3
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