Evaluate 8^(2/3).
Answer and explanation
Correct answer: D. 4
- Step 1: The denominator 3 means the cube root: cube root of 8 = 2. Step 2. The numerator 2 means square it: 2^2 = 4. Answer: 4. Why not the others: 16: The cube root is taken first and then the result is squared; 16 is not reached that way. 2: That is just the cube root of 8, without the square. 64: That squares 8 and ignores the cube root.
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