Question

Daca a=√8   si b=  √2+1/√2-1   a) Verificati daca a= 2b/b-2    b)Aratati ca (b-1)(b+1)>a(a+2)

Answer 1

Ai ca a = 2$\sqrt{2} ;$
b = 3 + 2$\sqrt{2} ;$ ( am rationalizat cu $\sqrt{2} +1;$);
Spor la calcule!

Bafta!