Question

Alguém me ajuda por favor não estou conseguindo fazer!! Ou me explica obrigado

Answer 1

$3) ( \frac{1}{2} )^{-5} : ( \frac{1}{2} )^2 . (8^2)^2=2^5 : 2^{-2} . (2^3)^4 = 2^5 : 2^{-2} . 2^{12}=2^{5+2+12}=2^{19} \\ 4) 4^{ \frac{1}{2} } - 2^{-1}+(-3)^0+(-1)^0.(25^{-1})^0= \sqrt{4}- \frac{1}{2}+1+1.1=2- \frac{1}{2} +2 \\ = \frac{4-1+4}{2}= \frac{7}{2} \\ 5)16^{-0,5}+81^{-0,25}=16^{- \frac{1}{2} }+81^{- \frac{1}{4} }=(2^4)^{- \frac{1}{2} }+(9^2)^{- \frac{1}{4} }=2^{- \frac{4}{2} }+9^{- \frac{2}{4} } \\ =2^{-2 }+9^{- \frac{1}{2} }=( \frac{1}{2} )^2+( \frac{1}{9} )^{ \frac{1}{2} }=$$\frac{ 1^{2} }{ 2^{2} } + \frac{ \sqrt{1} }{ \sqrt{9}} = \frac{1}{4}+ \frac{1}{3}= \frac{3+4}{12}= \frac{7}{12}$