Question

resolva as expressões pfvrrr ​

Answer 1

Resposta:

$a)~(5^{3} .5^{2} )^{2} :5^{5} =\frac{(5^{3+2})^{2} }{5^{4} } =\frac{(5^{5})^{2} }{5^{4} } =\frac{5^{10} }{5^{4} } =5^{10-4} =5^{6} \\ \\ b)~\frac{10^{-3}.10^{5} }{10.10^{4} }=\frac{10^{-3+5} }{10^{1+4} } =\frac{10^{2} }{10^{5} } =10^{2-5}=10^{-3}$