434 McGRAW-HILL’S SAT
Concept Review 6:
Negative and Fractional Exponents
Evaluate the following expressions without a calculator.
- 5−^2 2. 91/2 3. 2−^5
4. 25−1/2 5. 43/2 6.
Simplify the following expressions, eliminating any negative or fractional exponents.
- x1/3 8. (4g)1/2 9. 4x−^2
- (4y)−^2 11. (9m)3/2 12. (27b)1/3/(9b)−1/2
- If x3/4=27, what is the value of x?
- If b−1/2=4, what is the value of b?
- If (2m)−^6 =16, what is the value of 2^3 m?
16
25
32
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