Sejam !$ A !$= !$ \dfrac{\left(2.10^{-3}\right).2^{-\dfrac{1}{2}}}{10^{-\dfrac{1}{4}}} !$ e B=!$ -\left(\sqrt[4]{\dfrac{\left(4.10^{-3}\right)^2.0,000005}{2}}\right) !$ .Comparando essas expressões numéricas, conclui-se que