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F(x) = 4/x-9
g(x)=4/x + 9
find f(g(x))

User Alex Wolf
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1 Answer

5 votes
hello,


f(x)= (4)/(x-9) \\ g(x)= (4)/(x+9) \\ f(g(x))=f( (4)/(x+9) )\\ = (4)/( (4)/(x+9)-9) \\ = (4(x+9))/(4-9x-81) \\ =- (4x+36)/(77x+9x)
User Juanefren
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