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Cat face 3 la puterea -2?

Răspuns :

[tex]3^{-2}=(\frac{1}{3})^{2}=\frac{1^{2}}{3^{2}}=\frac{1}{9}[/tex]
[tex] 3^{-2} = ( \frac{1}{3} )^{2} = \frac{1}{9} [/tex]