Tolong dibantu (f o g)

[tex](fog)(x) \\ = 2 {(4x + 5)}^{2} + 1 \\ = 2( {16x}^{2} + 40x + 25) + 1 \\ = 32 {x}^{2} + 80x + 50 + 1 \\ = 32 {x}^{2} + 80x + 51[/tex]
semoga membantu..... ;) dan maaf kl salah