Here is your answer
The square root of a squared number, will be the number itself.
EXPLANATION:
Let [tex] x[/tex] be a number.
Its square= [tex]{x}^{2}[/tex]
Now square root of this squared number= [tex] \sqrt{{x}^{2}} [/tex]
= [tex] {x}^{2×\frac{1}{2}} [/tex]
= [tex] {x}^{1} [/tex]
= [tex] x [/tex]
Hence, the initial number x is obtained.
HOPE IT IS USEFUL
