Question

AJUDEEEEEM??!?!?! PORFAVOR?!!?


Dada a função f(x)= 2x*2-6x-4,calcule:
a) f(13)
b)f(-2)
c)f(0)
d f(-0,2)

Answer 1

f(x)=2x^2-6x-4
a) f(13)=2.13^2-6.13-4
f(13)=2.169-78-4
f(13)=338-82
f(13)=256
b) f(-2)=2.(-2)^2-6.(2)-4
f(-2)=2.4-12-4
f(-2)=8-16
f(-2)=-8
c) f(0)=2.0^2-6.0-4
f(0)=2.0-0-4
f(0)=0-4
f(0)=-4
d) f(-0,2)=2.(-0,2)^2-6.(-0,2)-4
f(-0,2)=2.0,04+1,2-4
f(-0,2)=0,08-2,8
f(-0,2)=-2,72