Tentukan nilai fungsi komposisi berikut!

langsung aja y

(gof)(x) = g{f(x)}
4x²+6x+1 = g(2x+3)

misal :
2x+3 = a
x = a-3 / 2

soal menjadi →
g(a) = 4(a-3 / 2)² + 6(a-3 / 2) + 1
g(a) = 4(a²-6a+9 / 4) + 3(a-3) + 1
g(a) = a² - 6a + 9 + 3a - 9 + 1
g(a) = a² - 3a + 1

g(x) = x² - 3x + 1
g(-2) = (-2)² - 3(-2) + 1
g(-2) = 4 + 6 + 1
g(-2) = 11

jawabannya E

semoga berguna +_+