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OpenStudy (ivettef365):
when you add a fraction and you have something like this: 4 2 ---- - ------ 7 7
OpenStudy (ivettef365):
how would you solve that ?
OpenStudy (gokuporter):
2/7
OpenStudy (ivettef365):
ok, do the same thing on the problem you have, the common denominator is a^2-4
OpenStudy (ivettef365):
just subtract the top and you have 4a + 1 -(2a+7)
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OpenStudy (ivettef365):
4a+1-2a-7
OpenStudy (ivettef365):
combine like terms
OpenStudy (ivettef365):
your answer is correct, because it cannot be simplified any more
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