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lamatematica urgent.​

Lamatematica Urgent class=

Răspuns :

Răspuns:

a)x= -2

f(-2)= -2×2+4/-2=-4+4/-2=0/-2=0

b)×= -0,4= -4/10= -2/5

f(-2/5)= 2×(-2/5)+4/-2/5= -4/5+20/5 totul pe -2/5=16/5 /-2/5= -8

c)x= -4

f(-4)= 2×(-4)+4/-4= -8+4/4= -4/4 =-1