jika f (x) =x² dan g(x) =2x+5 tentukan A. F(g(a-1) B. G(f(3/4))

A) f (g(a-1) ) = f (2a +5)
= (2a +5)^2
= 4a^2 + 20a +25
b) g(f(3/4))
g ((3/4)^2
g (9/16)
= 2(9/16) + 5
= 9/8 + 5
= 9/8 + 40/8
= 49/8
= 6 1/8