You use square roots to because it is a easier way of finding two number that are the same that equal that number for example
1x1=2 so two is a square root
2x2=4 so four is a square root
3x3=9 so nin is a square root
4x4=16 so sixteen was a square root
5x5=25 so tweny five is a square root
Ans so on and so on..
Any other questions about the subject i can go into further detail about it just privaltly message me
Many have wondered about this........Current mathematical sympathies would suggest that square roots be disregarded as merely "troublesome" things........However, we here on the forum will continue to employ them until such time as we feel that they have worn out their welcome. Then??? They will be booted out of the "Math Club."