Answer
$8 \times 10^{-30}$
Work Step by Step
RECALL:
(i) $(ab)^m=a^mb^m$
(ii) $(a^m)^n=a^{mn}$
Use the rules above to have:
$=2^3 \times (10^{-10})^3
\\=8 \times 10^{-10\cdot 3}
\\=8 \times 10^{-30}$
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