Question

Calcule as potências

Answer 1

a) $(\frac{3}{4} )^{-2} = \frac{4}{3^{2} } = \frac{4}{9}$                              b) $( -\frac{5}{4} )^{-3} = (-\frac{4}{5^{3} } ) = -\frac{4}{125}$    

c) $10^{-3} = \frac{1}{10^{3} } = \frac{1}{1000}$ ou 0,001           d)  $2^{-1} = \frac{1}{2}$

e) $(-6)^{-2} = \frac{1}{6^{2} } = \frac{1}{36}$                          f) $(\frac{1}{9} )^{-2} = 9^{2} = 81$