中等MATH-NUMB-008
Which of the following is equal to 8^(2/3)?
A. 8^2 / 8^3
B. 16
C. 2
D. 4✓ 答案
解說
8^(1/3) = 2, and squaring that root gives 4. The option 2 is only the cube root. 16 would be 2^4 or 8^(4/3). A quotient of powers is a difference of exponents, not the fraction 2/3.