Diketahui f(x)=2x+3 dan g(x)=x²-3x+5 tentukan nilai (f+g) (-2)

Diketahui :
f(x) = 2x + 3
g(x) = x² – 3x + 5

Ditanya :
(f + g)(-2)?

Jawab :
(f + g)(x) = f(x) + g(x)
(f + g)(x) = (2x + 3) + (x² – 3x + 5)
(f + g)(x) = x² – x + 8

(f + g)(x) = x² – x + 8
(f + g)(-2) = (-2)² – (-2) + 8
(f + g)(-2) = 4 – (-2) + 8
(f + g)(-2) = 14