Respuesta :

s1m1

Answer:

9x²+30x+26

Step-by-step explanation:

f(x) =3x+5

g(x) =x²+1

(gof)(x) = g(f(x)) = g( 3x+5) = (3x+5)² +1 = 9x²+30x+25+1 = 9x²+30x+26