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OpenStudy (anonymous):
7/w-9 + 7/w+9 add and simplify
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OpenStudy (saifoo.khan):
whts the denominator?
OpenStudy (anonymous):
is it like this:
OpenStudy (anonymous):
like what
OpenStudy (anonymous):
w+9 and w-9 saifoo
OpenStudy (anonymous):
14w/(w^2-81)
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OpenStudy (lalaly):
[7(w+9)+7(w-9)]/w^2-81 > [7w+63+7w-63]/w^2-81 =14w/w^2-81
OpenStudy (anonymous):
guess i cant help here
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