CPM Homework Help : PC3 Problem 3-12

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3-12.

Simplify the following expressions.

$\large \frac { ( x + 2 ) ^ { 3 } } { ( x + 2 ) }$
Hint (a):
Rewrite the numerator as $(x+2)(x+2)(x+2)$ .

$\large \frac { x ^ { 2 } - 5 x + 6 } { ( x - 2 ) ^ { 2 } }$
Hint (b):
Factor and simplify.

$\large \frac { 2 x ^ { 2 } - 2 y ^ { 2 } } { x + y }$
Hint (c):
Factor out 2 in the numerator first and then factor again.

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