Question

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Answer 1

$Given : \sqrt{64}$

$\implies \sqrt{64} = \sqrt{8\times8} = \sqrt{8^2} = (8^2)^\frac{1}{2} = 8^\frac{2}{2} = 8$

$Hence : \sqrt{64} = 8$

Answer 2

1. Write the number in exponential form with a base of 8.

2. Reduce the index of the radical and exponent with 2.

3. Your answer is 8

I hope this helps☺