3 years ago

How do you do radical 128 with an index of negative 3

Mathematics

1 answer:

NikAS [45]3 years ago

4 0

$128=2^7\\\\128^{-3}=\left(2^7\right)^{-3}=2^{7\cdot(-3)}=2^{-21}=\frac{1}{2^{21}}$

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