Completely factor the following expression:
(9x^5 + 25x^3 - 4) - (x^5 - 8x^3 - 4)
(9x^5 + 25x^3 - 4) - (x^5 - 8x^3 - 4) simplify
8x^5 + 17x^3 =
x^3 ( 8x^2 + 17)
