If f(x)=3 x+5, g(x)=6 x-1, then find (fg) (3) - Vidyadip

Question

If $f(x)=3 x+5, g(x)=6 x-1$, then find $(fg) (3)$

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Answer

$ (\mathrm{fg})(3)=f(3) g(3)$
$=[3(3)+5][6(3)-1]$
$=(14)(17)$
$=238 $

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