bantuin nomor 6 berikut caranya makasih:)

[tex]f(x) = 3 {x}^{2} + 5[/tex]
g(x-1) = 4x + 2
(g(x-1))=4x+2
g(x)=4x+6
[tex]fog( - 2) = 3 {(4x + 6)}^{2} + 5 = 3(16 {x}^{2} + 48x+ 36) + 5 = \\ 3(64 - 96 + 36) + 5 = 17[/tex]