Question

√How to root over? & WHAT IS IT?

Answer 1

Are u wanna know about '√'?
let a number N = X×X×Y×Y = $X^{2} Y^{2}$
you have to find √N.
$then, \sqrt{N} = \sqrt{ X^{2} Y^{2} } = XY$
$Ex;- (1) . \sqrt{9} = ?$
$\sqrt{9} = \sqrt{3*3} = \sqrt{ 3^{2} } =3$