Question

sabendo que
$x = {2}^{ - 2} e \: y = 0.555... \: calcule \: x - y$


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Answer 1

Resposta:

${2}^{ - 2} = { (\frac{1}{2}) }^{2} = \frac{1}{4} = 0.25$

$0.25 - 0.555 = - 0.305$