Question

Calculați 5 supra radical din 2 minus 3 supra radical din 2 .

Answer 1

$\frac{5}{\sqrt2} -\frac{3}{\sqrt2}=\frac{2}{\sqrt2}=\boxed{\bold{\frac{2\sqrt2}{2}}}.$

Answer 2

$\frac{5}{ \sqrt{2} } - \frac{3}{ \sqrt{2} } = \\ = \frac{2}{ \sqrt{2} } } =(rationalizam) \\ = \frac{2 \sqrt{2} }{ \sqrt{4} } } = \\ = \frac{2 \sqrt{2} }{2} = \\ = \sqrt{2}$