Simplify the expression: x4−625x2+25⋅x+5x−5\frac{x^4 - 625}{x^2 + 25} \cdot \frac{x+5}{x-5}x2+25x4−625⋅x−5x+5
(x+5)2(x+5)^2(x+5)2
x2−25x^2 - 25x2−25
(x2+25)(x−5)(x^2+25)(x-5)(x2+25)(x−5)
None of these