Assuming the equation is x^2 = 25, there are two solutions.
The two solutions are x = 5 and x = -5.
This can be found by taking the square root of 25 to get 5, then making sure to include the negative version of the number
Note how
x^2 = (5)^2 = 25
and how
x^2 = (-5)^2 = 25
squaring a negative number makes it positive