Respuesta :

Step-by-step explanation:

2x^2-5x

f(x)= 2(4)^2-5(4)

2(16)-20

32-20= 12

Answer:

-4

Step-by-step explanation:

F(-4)= 2x^2 - 5x

F(-4)= 4x - 5x

F(-4)-4x+5x

F (-4)1

-4