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Functions(p-1) — Maths (commerce) STD 11 Commerce / Arts — Question

Maharashtra BoardEnglish MediumSTD 11 Commerce / ArtsMaths (commerce)Functions(p-1)1 Mark
Question
If $f(x)=2 x^2+3, g(x)=5 x-2$, then find : gof
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Answer

$\begin{aligned} & (g \circ f)(x)=g(f(x)) \\ = & g\left(2 x^2+3\right) \\ = & 5\left(2 x^2+3\right)-2 \\ = & 10 x^2+15-2 \\ = & 10 x^2+13\end{aligned}$

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