Solutions: Let us assume, that 
i.e. 
Squaring both the sides, we get,
![\[(y \sqrt{5})^{2}=x^{2}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-0a2bdf8fcc6b4d0e6ebde31553911d7a_l3.png "Rendered by QuickLaTeX.com")
![\[\Rightarrow 5 y^{2}=x^{2} \ldots\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-ca2f23ca9f2178b13198e23fa20ce8ce_l3.png "Rendered by QuickLaTeX.com")
Thus, 
Let us say, 
Clearly, 
Hence,
Prove that
Solutions: Let us assume, that
i.e.
Squaring both the sides, we get,
Thus,
Let us say,
Clearly,
Hence,
