Let f and g be real functions, defined by `f(x)=(1)/((x+4))andg(x)=(x+4)^(3)`

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Let f and g be real functions, defined by `f(x)=(1)/((x+4))andg(x)=(x+4)^(3)`. Find (i) `(f+g)(x)` (ii) `(f-g)(x)` (iii) `(fg)(x)` (iv) `((f)/(g))(x)` (v) `((1)/(f))(x)`
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