Question

Exercitiile 2 si 3 de aici

Answer 1

2) x patrat+3x+5=0
x patrat+2x+1+3x+5=0
x patrat+5x+6=0
Acum facem delta:a=1,b=5,c=6
delta=b patrat-4xaxc
       =25-4x1x6
       =1
   x1=-b+radical din delta/2xa
      =-5+1/2=>-4/2=>x1=-2
   x2=-b-radical din delta/2a
      -5-1/2=>-6/2=>x2=-3

Answer 2

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