diketahui fungsi f(x)=4-2x dan g(x) =2x^2-4 . tebtukanlah komposisi berikut ! a. (fog)(x) , b(gof)(x) , (fog)(1, dan (gof)(2)

f(x) = 4-2x
g(x) = 2x²-4

a) (fog)(x) = f(g(x)) = 4-2(g(x))
= 4-2(2x²-4)
= 4 -4x² + 8
= -4x² + 12

b) (gof)(x) = g(f(x)) = 2(f(x))²-4 = 2(4-2x)²-4
= 2 (16-16x+4x²) - 4
= 32-32x+8x²-4
= 8x² -32x + 32 -4
= 8x² -32x + 28

c) (fog)(1) = -4x² + 12 = -4(1)² + 12 = 8

d) (gof)(2) = 8x² -32x + 28 = 8(2)² -32(2) + 28
= 32 - 64 + 28 = -4

semoga membantuu, dikoreksi lagi yaa