Question

$\red{\frac{25}{ \sqrt{40} - \sqrt{80} } }$

Next step ✅ <><><><><>

$= \red {\frac{25}{2\sqrt{10} - 4 \sqrt{5} }}$

<><>><><><><><><><><><>

How this came yaar Anybody answer correctly. Solution I know.
​

Answer 1

${\implies\sf\frac{25}{ \sqrt{40} - \sqrt{80} } }$

${\implies\sf\frac{25}{ \sqrt{2 \times 2 \times 2 \times 5} - \sqrt{2 \times 2 \times 2 \times 2 \times 5} } }$

${\implies\sf\frac{25}{ \sqrt{ {2}^{2} \times 10} - \sqrt{4 \times4\times 5} } }$

${\implies\sf\frac{25}{2 \sqrt{ 10} - \sqrt{ {4}^{2} \times 5} } }$

${\implies\sf\frac{25}{2 \sqrt{ 10} - 4\sqrt{ 5} } }$

In this way ${\red{\frac{25}{ \sqrt{40} - \sqrt{80} } } \mathfrak{come} \sf{\red {\frac{25}{2\sqrt{10} - 4 \sqrt{5} }}}} .$