jika diketahui f(×)= x-3 dan g(×) = x^2+2x, hasil dari (g o f)(×)??

[tex]gof(x) = g(f(x)) \\ = g(x - 3) \\ = {(x - 3)}^{2} + 2(x - 3) \\ = ( {x}^{2} - 6x + 9) + (2x - 6 ) \\ = {x}^{2} - 6x + 2x + 9 - 6 \\ = {x}^{2} - 4x + 3[/tex]
Semoga dapat dipahami