Question 165722
 {{{((a^2-36))/((a^2+9a+18))}}} Please Simplify, if possible.
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Recognize the numerator is the"difference squares" and the denominator can also be factored

{{{((a-6)(a+6))/((a+6)(a+3))}}}
Cancel the (a+6)'s, leaving
{{{((a-6))/((a+3))}}}