Question

2) Calcule as potências:
a) 4-2 =
b) 4-3 =
c) 5-1 =
d) 3-3 =​

Answer 1

Olá! (^_-)

$\large \sf \displaystyle { \sf a)4 {}^{ - 2} = \frac{1}{4 {}^{2} } = \frac{1}{4 \cdot 4} = \boxed{ \red { \frac{1}{16} }}}$

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$\large \sf \displaystyle { \sf b)4 {}^{ - 3} = \frac{1}{4 {}^{3} } = \frac{1}{4 \cdot 4 \cdot4} = \boxed{ \red { \frac{1}{64} }}}$

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$\large \sf \displaystyle { \sf c)5 {}^{ - 1} = \frac{1}{5 {}^{1} } = \boxed{ \red { \: \frac{1}{5} \: }}}$

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$\large \sf \displaystyle { \sf d)3 {}^{ - 3} = \frac{1}{3^{3} } = \frac{1}{3 \cdot 3 \cdot3} = \boxed{ \red { \frac{1}{27} }}}$

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Espero ter ajudado! ❤️