Question

найдите значение выражения
$\sqrt{2} \times \sqrt{50} - \frac{ \sqrt{45} }{ \sqrt{20} }$


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Answer 1

$\sqrt{2} *\sqrt{50}-\frac{\sqrt{45} }{\sqrt{20} }= \sqrt{2*50}-\sqrt{} \frac{45}{20} = \sqrt{100} - \frac{ \sqrt{9} }{\sqrt{4} } = 10 - \frac{3}{2} =\frac{17}{2} = 8.5$

Answer 2

$\sqrt{2}*\sqrt{50}-\frac{\sqrt{45}}{\sqrt{20}}=\sqrt{2*50} -\sqrt{\frac{45}{20}}=\sqrt{100}-\sqrt{\frac{9}{4}}=\sqrt{10^{2}}-\sqrt{(\frac{3}{2})^{2}}=\\\\=10-\frac{3}{2}=10-1,5=8,5\\\\Otvet:\boxed{8,5}$