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Simplify the sum. 7/(a+8) + 7/(a^2 - 64)

Mathematics
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Okay so notice that the bottom of the second fraction is infact the "difference of two squares" i.e. (a^2-64)=(x-8)(x+8), then multiply the first fraction by x-8 so that you have equal denominators then you may add them together simply and simplify if nessecary
What is the lcm of a+8 and a^2-64?
64?

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Other answers:

You play AnimalJam?
a+8=1*(a+8) a^2-64=(a+8)(a-8)
.-. Thats wha aj stands for
aj??
^ nvm
aj u there?
yup I am
oh ok so that answer i will is C or D
??
:| Silence
Lcm of a+8 and a^2-64 is a^2-64 a^2-64=(a-8)(a+8) So the common denominator is a^2-64 With vat expression do u need to multiply (a+8) to make it a^2-64?
|dw:1359656931020:dw||dw:1359657016517:dw|
I don't have that as a mutilple choice?
simplify the numerator
so its A?...

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