Ex 3 va rog e urgent!! Dau coroana!
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Răspuns:
Explicație pas cu pas:
a) (3×6+1)/(6-1)=19/5∉ A nu e numar intreg
b)(3x+2)/(x-1)=3+5/(x-1)
x-1=±1 x=0 si x=2
x-1=±5 x=6 si x=-4
A={-4,0,2,6}