Answer:
The answer is 25x10
1. (5x^5)^2
2. ^5 x ^2 = ^10
3. 5^2 = 25
4. 25x^2
In order to solve this equation, you have to use the multiplication property of equations. This means that you have to not only multiply the exponents, but also the 5. The variable (x) stays the same, as the only components that have to be multiplied are the exponents and the number 5.
Hope this helps!