Respuesta :

BrainLifting

Answer:

f(-3)=-6

Step-by-step explanation:

[tex]f(x)=2x^2+5x-9\\By\ substituting\ x=-3,\\f(-3)=2(-3)^2+5*-3-9\\f(-3)=2*9-15-9\\f(-3)=18-15-9=-6[/tex]