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\frac{\frac{2\sqrt{5}\sqrt{2}}{\left(\sqrt{2}\right)^{2}}}{\sqrt{\frac{10}{994}}}
Rationalize the denominator of \frac{2\sqrt{5}}{\sqrt{2}} by multiplying numerator and denominator by \sqrt{2}.
\frac{\frac{2\sqrt{5}\sqrt{2}}{2}}{\sqrt{\frac{10}{994}}}
The square of \sqrt{2} is 2.
\frac{\frac{2\sqrt{10}}{2}}{\sqrt{\frac{10}{994}}}
To multiply \sqrt{5} and \sqrt{2}, multiply the numbers under the square root.
\frac{\sqrt{10}}{\sqrt{\frac{10}{994}}}
Cancel out 2 and 2.
\frac{\sqrt{10}}{\sqrt{\frac{5}{497}}}
Reduce the fraction \frac{10}{994} to lowest terms by extracting and canceling out 2.
\frac{\sqrt{10}}{\frac{\sqrt{5}}{\sqrt{497}}}
Rewrite the square root of the division \sqrt{\frac{5}{497}} as the division of square roots \frac{\sqrt{5}}{\sqrt{497}}.
\frac{\sqrt{10}}{\frac{\sqrt{5}\sqrt{497}}{\left(\sqrt{497}\right)^{2}}}
Rationalize the denominator of \frac{\sqrt{5}}{\sqrt{497}} by multiplying numerator and denominator by \sqrt{497}.
\frac{\sqrt{10}}{\frac{\sqrt{5}\sqrt{497}}{497}}
The square of \sqrt{497} is 497.
\frac{\sqrt{10}}{\frac{\sqrt{2485}}{497}}
To multiply \sqrt{5} and \sqrt{497}, multiply the numbers under the square root.
\frac{\sqrt{10}\times 497}{\sqrt{2485}}
Divide \sqrt{10} by \frac{\sqrt{2485}}{497} by multiplying \sqrt{10} by the reciprocal of \frac{\sqrt{2485}}{497}.
\frac{\sqrt{10}\times 497\sqrt{2485}}{\left(\sqrt{2485}\right)^{2}}
Rationalize the denominator of \frac{\sqrt{10}\times 497}{\sqrt{2485}} by multiplying numerator and denominator by \sqrt{2485}.
\frac{\sqrt{10}\times 497\sqrt{2485}}{2485}
The square of \sqrt{2485} is 2485.
\frac{\sqrt{24850}\times 497}{2485}
To multiply \sqrt{10} and \sqrt{2485}, multiply the numbers under the square root.
\frac{5\sqrt{994}\times 497}{2485}
Factor 24850=5^{2}\times 994. Rewrite the square root of the product \sqrt{5^{2}\times 994} as the product of square roots \sqrt{5^{2}}\sqrt{994}. Take the square root of 5^{2}.
\frac{2485\sqrt{994}}{2485}
Multiply 5 and 497 to get 2485.
\sqrt{994}
Cancel out 2485 and 2485.