diketahui fungsi f(x) = 2x + 3 dan g(x) = 12x +32x + 26. Nilai (g o f)(-2)=

gof (x) = g(2x+3)
            = 12 (2x+3)+32x (2x+3)+26
              = 24x +36 +64x+96 +26
               = 88x + 158

gof (-2) = 88 (-2) + 158 = -166 +158 = -8