<PRE><B>Question 467456</B>
5/(a-3)-2/(a^2-9) 
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Factor:
[5/(a-3)] - [2/(a-3)(a+3)]
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Least common denominator: (a-3)(a+3)
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Rewrite each fraction with the lcd as its denominator:
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= [5(a+3)/lcd] - [2/lcd]
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Combine the numerators over the common denominator:
= [5a+15-2]/lcd
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simplify:
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= [5a+13]/[(a-3)(a+3)]
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cheers,
stan H.
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