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Daca a= 0, (2), calculati 1 supra a

Răspuns :


[tex]\it a=0,(2) =\dfrac{2}{9}\\ \\ \\ \dfrac{1}{a}=\dfrac{1}{\dfrac{2}{9}}=1:\dfrac{2}{9}=1\cdot\dfrac{9}{2}=\dfrac{9}{2}[/tex]