Dik. fungsi f(x)=2x + 3, g(x)=2x²-3, tentukan (g ° f) (x)

f (x) = 2x + 3
g (x) = 2x² - 3

gof (x)
= g (f (x))
= g (2x + 3)
= 2 (2x + 3)² - 3
= 2 (4x² + 12x + 9) - 3
= 8x² + 24x + 18 - 3
= 8x² + 24x + 15