Question

$rationalise \: the \: denominator \: of \: \frac{1}{\sqrt{2} }$
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Answer 1

$rationalise \: the \: denominator \: of \: \frac{1}{\sqrt{2} } \\ solution. \\ = \frac{1}{ \sqrt{2} } \\ = \frac{1 \times \sqrt{2} }{ \sqrt{2 } \times \sqrt{2} } \\ = \frac{ \sqrt{2} }{ \sqrt{4} } \\ = \frac{ \sqrt{2} }{ \sqrt{2 \times 2} } \\ = \frac{ \sqrt{2} }{2} \: \: answer...</p><p>$