Question

Jika x=(3-x), maka hasil dari Rumus f(x) = x-2/3-2x ??

Answer 1

F(x) = x - 2/3 - 2x
 f(3-x) = (3-x) - 2/3 - 2(3-x)
f (3-x) = 3-x - 2/3 - 6 + 2x (semua dikali 3)
f (3-x) = 9 - 3x - 2 - 18 + 2x
f (3-x) = -3x + 2x - 18 + 9 - 2
f (3-x) = - x - 11

maaf kalau salah