CPM Homework Help : PC3 Problem 2-80

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2-80.

Evaluate each expression without using a calculator. Compute without a calculator

$64^{2/3}$
Step (a):
$(64^{1/3})^2$

$125^{4/3}$
Step (b):
$(125^{1/3})^4$

$81^{3/4}$
Step (c):
$(81^{1/4})^3$

$\left(\frac{27}{8}\right)^{-2/3}$
Step (d):
$\Big(\frac{8}{27}\Big)^{2/3}$

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