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Mathematics 13 Online
OpenStudy (anonymous):

subtract and simplify if possible f f ------- - ------- z+f z-f

OpenStudy (anonymous):

f(z-f) - f(z+ f)/(z+f)(z-f)= -2f^2/z^2- f^2

OpenStudy (anonymous):

how did you get the 2's

OpenStudy (anonymous):

taking the LCM and simlifying

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