a) min = -delta/4a
delta=2^2-4*4*8=4-128=-124
min= 124/4*4=31/4
b) V(-b/2a,-delta/4a)
-b/2a=-2/2*4=-1/4
v(-1/4, 31/4)
c) intersectia cu oy
pun conditia x=0 si calculez
f(0)=4*0^2+2*0+8=8
A(0,8)
intersectia cu ox
pentru ca delta<0 rezulta ca ec nu are radacini reale deci parabola asociata nu intersecteaza axa ox.
