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Dinamovistu000
a fost răspuns

Cat face 2 la puterea -2?

Răspuns :

1/2 la puterea 2 adica 1/4

[tex]\it 2^{-2}= \left (\dfrac{2}{1} \right)^{-2} =\left[\left (\dfrac{2}{1} \right)^{-1}\right]^2 = \left (\dfrac{1}{2} \right)^{2} = \dfrac{1^2}{2^2} =\dfrac{1}{4}[/tex]


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