Exponents, radicals, and rational exponents
Equivalent expressions · Stage 1
Recognize the pattern
A denominator in a rational exponent indicates a root.
Useful rulea^(m/n)=ⁿ√(a^m)
Try it before reading the solution
Simplify 27^(2/3).
This teaching example is original and is not an official SAT question.
Reasoning
The cube root of 27 is 3; square 3 to get 9.
Answer9
03 · Next step
See membership →Ready for adaptive practice
Practice questions remain in English, as on the SAT.