Diketahui fungsi f(x) = x² + 3x-5 dan g(x) = 4x + 8.nilai (fog)(-3) adalah ….​

f(x) = (x² + 3x – 5)

g(x) = (4x + 8)

(fog)(x) = f(g(x))

(fog)(x) = f(4x + 8)

(fog)(x) = (4x + 8)² + 3•(4x + 8) – 5

(fog)(x) = (16x² + 64x + 64) + 12x + 24 – 5

(fog)(x) = 16x² + 64x + 64 + 12x + 24 – 5

(fog)(x) = 16x² + 64x + 12x + 64 + 24 – 5

(fog)(x) = 16x² + 76x + 83

(fog)(-3) = 16•(-3)² + 76•(-3) + 83

(fog)(-3) = 16•9 + (-228) + 83

(fog)(-3) = 144 – 228 + 83

(fog)(-3) = (-1)