CPM Homework Help : CCA Problem 3-112

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3-112.

Simplify using only positive exponents.

$\left(3x^2y\right)\left(5x\right)$
Answer (a):
$15x^3y$

$\left(x^2y^3\right)\left(x^{-2}y^{-2}\right)$
Answer (b):
$y$

$\frac{x^3}{x^{-2}}$
Hint (c):
Subtract the exponents.

$\left(2x^{-1}\right)^3$
Hint (d):
$2x^{-1}=\frac{2}{x}$

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