Let f(x) = x2 - 4 and g(x) = 2x + 4 be two functions. Find fog-1(-2) =? 0 fog! (- 2) = 1(-2) . (1/ 8( - 2) = (0) . (- 1 /6 ) = 0 because f(-1) =(-2) - 4 = 0 and g(-1) = -2-4=-6 0 fog! (- 2)= f (/812)= undefined because g 1(-2) = 1/8(2)= undefined for g(2) = 212) - 4 = 0 0 fog! (- 2) = f(81 (-2)) = f(1) = - 3, for 81 (-2) = (-2+4)/2 = 1 and f(1) = 1-4=-3 0 fog! (- 2) = f( - 2) . 81 ( - 1) = (0) x (1) = 0 for fl- 2) = (-2)2 - 4 = 0 and 81(-2) = (-2+ 4)/2 = 1