Respuesta :

tonb
Multiplying factors with exponents means you can add the exponents.

So [tex] 2^{4} \cdot 2^{-7} = 2^{4-7} = 2^{-3}[/tex]

A negative exponent becomes positive when you move it to the denominator, so:

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

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