Diketahui (f o g)(x) = 4x²-10x+ g dan g(x) = 2x + 3 Tentukan Fungsi F(x) bantu jawab pliss​

(fog)(x) = 4x² – 10x + 9

f(g(x)) = 4x² – 10x + 9

f(2x + 3) = 4x² – 10x + 9

Misal y = 2x + 3 maka x = (y – 3)/2

f(y) = 4((y – 3)/2)² – 10((y – 3)/2) + 9

= 4((y² – 6y + 9)/4) – 5(y – 3) + 9

= y² – 6y + 9 – 5y + 15 + 9

= y² – 11y + 33

f(x) = x² – 11x + 33