Question

2x 2.(5) =
p.s e 2 intreg si 5 in perioada numarul 2.(5)

Answer 1

$2\times 2 intreg si 2,(5) = 2\times \Big(2+2,(5)\Big) = 2\times4,(5) = 2\times \dfrac{45-4}{9}}=\\ \\ =2\times \dfrac{41}{9} = \dfrac{82}{9} = 9,(1)\\ \\ \boxed{\text{Stim faptul ca: } a\dfrac{x}{y} = a+\dfrac{x}{y}}$