Question

simplify
4√(64)^-2​

Answer 1

4(√64)^-2

4(8)^-2

4(1/8)²

4 × 1/64

1/16

Answer 2

$= 4 \times {( \sqrt{64}) }^{ - 2} \\ = \frac{4}{({ \sqrt{64}) }^{2} } \\ = \frac{4}{64} \\ = \frac{1}{16}$

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