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Determinati valorile lui x astfel incat:
(x+1)|(x+10)


Răspuns :

x+1|x+10
x+1|x+1
Scadem relatiile
x+1|9 ==> x+1 apartine -9,-3,-1,1,3,9 ==> x apartine -10,-4,-2,0,2,8
daca x+1)|(x+10) atunci
        (x+1)|(x+1)  scadem relatiile
        (x+1)|9        deci x+1 este div. alui 9 adica {-1,-3,-9,1,3,9}
x+1=1⇒x=0
x+1=3⇒x=2
x+1=9⇒x=8
x+1=-1⇒x=-2
x+1=-3⇒x=-4
x+3=-9⇒x=-12