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Respondido

calcule as potencias
a) 2 elevado a -1
b) 1 elevado a -2
c) 2 elevado a -2
d) -2) elevado a -3

Resposta :

Bruninha5949go

[tex]a) 2^{-1} = \frac{1}{2^{1} } = \frac{1}{2}[/tex]

[tex]b) 1^{-2} = \frac{1}{1^{2} } = 1[/tex]

[tex]c) 2^{-2} = \frac{1}{2^{2} } = \frac{1}{4}[/tex]

[tex]d) -2^{-3} = \frac{1}{-2^{3} } = -\frac{1}{8}[/tex]

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