👤
Srbangelica
a fost răspuns

(2x+5)/(x+1) apartine lui Z

Răspuns :

2x+5/x+1∈Z
x+1/2x+5 ⇒x+1/2x+5
x+1/x+1   ⇒x+1/2x+2
Le scadem si obtinem:
x+1/3⇒x+1∈D3
           x+1∈{1,3,-1,-3}
           x∈{0,2,-2,-4}

Alte intrebari