CPM Homework Help : CCA2 Problem A-24

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A-24.

Simplify each expression below.

$\frac { 6 x ^ { 2 } y ^ { 3 } } { 3 x y }$

Answer (a):
$2xy^2$

$(-mn)^3$

Hint (b):
What does the exponent tell about repeating ( $−mn$ ) as a factor?
Answer (b):
$-m^3n^3$

$(mn)^{-3}$

Hint (c):
What is the rule for negative exponents?

$\frac { 3.2 \times 10 ^ { - 2 } } { 8 \times 10 ^ { 3 } }$
Hint (d):
This is equivalent to $\left(\frac{3.2}{8}\right)\left(\frac{10^{-2}}{10^3}\right)$ .

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