Answer:
3x^5-25
Explanation:
you but the terms with the same power together and don't forget to add the signs that are in front of each terms when combining.
25 - 3x^5
-2x^4+16+2x^4+9-3x^5
Combine like terms
-2x^4+2x^4+9+16-3x^5
0 + 25 -3x^5
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