Two function machines are wired up:
f(x)=3x−4,g(x)=x2+2f(x) = 3x - 4, \qquad g(x) = x^2 + 2f(x)=3x−4,g(x)=x2+2
Feeding a number through them in one order does not have to give the same result as feeding it through in the other order.
Compute
f(g(3)) − g(f(3))f(g(3)) \;-\; g(f(3))f(g(3))−g(f(3))
Select all that apply.
222
−2-2−2
000
666