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Find fog\ (2) and gof\ (1) when: f: R->R...

Find `fog\ (2)` and `gof\ (1)` when: `f: R->R` ; `f(x)=x^2+8` and `g: R->R` ; `g(x)=3x^3+1` .

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Given as ` f(x) = x^2 + 8` and `g(x) = 3x^3 + 1.`
let `(fog)(2) = f(g(2)) = f(3 × 2^3 + 1) `
`= f(3 × 8 + 1) `
`= f(25) = (25)^2 + 8 = 633 `
and,
`(gof)(1) = g(f(1)) = g(1^2 + 8)`
...
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