SAT Math Multiple Choice Question 881: Answer and Explanation
11. Which sequence of steps correctly gives the value ofand algebraically justifies the value?
Correct Answer: D
Category: Passport to Advanced Math / Exponents
Strategic Advice: Use rules of exponents to rewrite the expression. The saying power over root may help as well.
Getting to the Answer: Use the exponent rule amn = (am)n and the fact that to rewrite the expression. Then simplify using the property:
This means (D) is correct.