Question

एक्स प्लस 3 अपऑन 7 माइनस टू एक्स माइनस फाइव अपॉन थ्री इक्वल टू थ्री एक्स माइनस फाइव अपॉन 5 - 25​

Answer 1

$\Huge{\color{lightblue}{\fbox{\textsf{\textbf{αηsωεя}}}}}$

$\sqrt{4}$= 2 where 2 is a rational number . Here n is perfect square the $\sqrt{n}$ is rational number

$\sqrt{5}$ = 2.236.. is not rational number But it is irrational number.here n is not a perfect square the $\sqrt{n}$ is irrational number

So $\sqrt{n}$ is not irrational number if n is perfect square.