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Calculati a+1/a,daca a>1 si verifica relatia a-1/a=√a+1/√a
Urgeeent....Dau coronitaa♥


Răspuns :

(√a-1/√a)(√a+1/√a)=a-1/a

dar
a-1/a=√a+1/√a  (ipoteza)
atunci
√a-1/√a=1

ridicam la patrat
a-2+1/a=1
atunci
a+1/a=3, cerinta