bantu jawab donk menggunakan cara, yg nmr 8

jawab

f(x) = 2x - 3
g(x) = x² - 4x - 5

c. fog(2) =  f { g(2)} = f (2²- 4(2) - 5) = f(-9) = 2(-9) - 3
fog(2) = -18 - 3
fog(2)=  -21

d. gof(-3) =  g{ f(-3)} = g (2(-3) - 3)) = g (-9) = (-9)²- 4(-9) - 5
gof(-3) = 81 + 36 - 5 = 112