Respuesta :

Answer:

f(x) = 2/5 x² -6/5 x -4

Step-by-step explanation:

<=> -2/5 (x+2)(x-5)

-2/5 (x²-3x-10)

-2/5 x² + 6/5 +4

<=> 2/5 x² -6/5 x -4