CPM Homework Help : AC Problem 10-123

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10-123.

Use what you have learned about exponents to rewrite each of the expressions below.

$\frac { h ^ { 9 } } { h ^ { 11 } }$
Hint (a):
Think about making ones and where any left over factors would remain.
Answer (a):
$\frac{1}{h^2}$

$x^3\cdot x^4$
Hint (b):
How many factors of $x$ are multiplied together?
Answer (b):
$x^7$

$\left(3k^5\right)^2$
Hint (c):
Write $3k^5$ twice and then follow the pattern from part (b).
Answer (c):
$\left(3k^5\right)\left(3k^5\right)$

$n^7\cdot n$
Hint (d):
Refer to part (b).

$\frac { 16 x ^ { 4 } y ^ { 3 } } { 2 x ^ { 4 } }$
Answer (e):
$\frac{16y^3}{2}=8y^3$

$4xy^3\cdot7x^2y^3$
Hint (f):
Refer to part (b).
Answer (f):
$28x^3y^6$

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