Question

Dik: f(x)= (x-2)²-1, g(x)= 2√x +1
nilai dari (f o g) (25)=.....?

Answer 1

F(x) = (x-2)(x-2) = x^2 - 4x + 4


(fog) = f(g(x))
= (2√x)^2 - 4(2√x) + 4
= 4x - 8√x + 4
(fog)(25) = 4(25) - 8√25 + 4
= 100 - 40 + 4
= 64



maaf ya kalau salah.