Practice mode Surds and Indices

What is the value of 32^(2/5) + 125^(2/3) − 64^(1/2)?

Correct answer C. 21

Explanation

32^(2/5) = 2² = 4, 125^(2/3) = 5² = 25 and 64^(1/2) = 8. So the value is 4 + 25 − 8 = 21.

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