Hello kiddio!
The answer is
8x5+6x4−59x+3
Distribute the Negative Sign:=3−6x(5)−8x(4)+−1(−6x4−3x−8x5)=3+−30x+−32x+−1(−6x4)+−1(−3x)+−1(−8x5)=3+−30x+−32x+6x4+3x+8x5
Combine Like Terms:=3+−30x+−32x+6x4+3x+8x5=(8x5)+(6x4)+(−30x+−32x+3x)+(3)=8x5+6x4+−59x+3
Have a nice day