Please help with this equation. I will give brainless for the first answer. Thanks!

Answer:
5 =x
Step-by-step explanation:
The expression is undefined when the denominator goes to zero
25 - x^2 =0
Add x^2 to each side
25 = x^2
Take the square root of each side
sqrt(25) = sqrt(x^2)
±5 = x
We want the non negative value
5 =x