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Find `gof` and `gof` when `f: R->R` and `g: R->R` is defined by `f(x)=2x+3` and `g(x)=x^2+5`

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Given function, f: R → R and g: R → R
And,
`f(x) = 2x + 3` and `g(x) = x2 + 5`
Now, `(gof)(x) `
`= g(f(x)) `
`= g(2x + 3) `
`= (2x + 3)^2 + 5 `
`= 4x^2 + 9 + 12x + 5 `
...
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