Respuesta :

Answer:

-9

Step-by-step explanation:

f(2) - f(4) / 2-4

[2²+3(2)] - [4²+3(4)] / -2

(10 - 28) / 2

= -18/2

= -9

Answer:

-9

Step-by-step explanation:

The answer is-9

-9 the correct answer