gof(5) dari fungsi f(x)=x2-4x+2 g(x)=3x-7

[tex]gof(x) = 3( {x}^{2} - 4x + 2) - 7 [/tex]
[tex] = {3x}^{2} - 12x + 6 - 7 \\ = {3x}^{2} - 12x - 1[/tex]
[tex]gof(5) = 3( {5}^{2} ) - 12(5) - 1 \\ = 3.25 - 60 - 1 \\ = 75 - 60 - 1 \\ = 14[/tex]

Semoga manfaat................