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If `f, g: R to R` be defined by `f(x)=2x+1` and `g(x) =x^(2)-2, AA x in R,` respectively. Then , find `gof` .

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Given that, `f(x)=2x+1` and `g(x)=x^(2)-2,AA x in R`
` :. gof = g{f(x)}`
` " "=g(2x+1)=(2x+1)^(2) -2`
` " "=4x^(2)+4x+1-2`
` " " =4x^(2)+4x-1`
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