Question

racionalize o denominador e simplifique quando for possível.
$a) \frac{1}{ \sqrt{5} }$

$b) \frac{10}{ \sqrt{10} }$

$c) \frac{3}{ \sqrt{2} }$


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Answer 1

Resposta:

$a)\\ {1\over\sqrt{5} }={\sqrt{5} \over\sqrt{5} .\sqrt{5} }={\sqrt{5} \over\sqrt{25} }={\sqrt{5} \over5}\\ \\ b)\\ {10\sqrt{10} \over\sqrt{10} .\sqrt{10} }={10\sqrt{10} \over\sqrt{100} }={10\sqrt{10} \over10}=\sqrt{10} \\ \\ c)\\ {3\sqrt{2} \over\sqrt{2} .\sqrt{2} }={3\sqrt{2} \over\sqrt{4} }={3\sqrt{2} \over2}$