a) \(\displaystyle {\left( {{1 \over 5}} \right)^5}{.5^5} = {\left( {{1 \over 5}.5} \right)^5} = {1^5} = 1\)
b) \({\left( {0,125} \right)^3}.512 = {\left( {0,125} \right)^3}{.8^3} \)\(\,= {\left( {0,125.8} \right)^3} = {1^3} = 1\)
c) \({\left( {0,25} \right)^4}.1024 = {\left( {0,25} \right)^4}.256.4 \)
\(= {\left( {0,25} \right)^4}{.4^4}.4 = {\left( {0,25.4} \right)^4}.4 \)\(\,= {1^4}.4 = 4\).
