Math Help - Floor !

1. Floor !

Hii !

prove, for all n positive integer, That :

$\lfloor \sqrt{4n+1} \rfloor = \lfloor \sqrt{4n+2} \rfloor= \lfloor \sqrt{4n+3} \rfloor=\lfloor \sqrt{n}+\sqrt{n+1} \rfloor$

P.S : $\lfloor x \rfloor =$ The Floor of x .