Question 1208686
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They want you solve  

    {{{y^2}}} = 25.


Take square root of both sides

    y = +/- {{{sqrt(25)}}} = +/- 5.


The original equation has two roots. 

One root is y= 5.

Another root is y= -5.


<U>CHECK</U>.  {{{5^2}}} = 25.       ! correct !

        {{{(-5)^2}}} = 25.    ! correct !


<U>ANSWER</U>.  The original equation has two solutions:  y = 5  and  y = -5.
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Solved.