Distribute minus to -6x^4, -3x, and -8x^5
- is the same as -1
-1(-6x^4) = 6x^4
-1(-3x) = 3x
-1(-8x^5) = 8x^5
3 - 6x^5 - 8x^4 + 6x^4 + 3x + 8x^5
Combine like terms
-6x^5 + 8x^5 + 6x^4 - 8x^4 + 3x + 3
2x^5 - 2x^4 + 3x + 3 is your answer
hope this helps
