1) (6/4 x^8-3/7 x^6+9)dx=x^9/6-3x^7/49-9x+C
2) (27-x^2-3)dx=(24-x^2)dx=24x-x^3/3+C
3) (2+1/x^5)dx=2x=1/(4x^4)+C
4)(1/x+1/x^2)dx=ln(x)-1/x+C
1) (6/4 x^8-3/7 x^6+9)dx=x^9/6-3x^7/49-9x+C
2) (27-x^2-3)dx=(24-x^2)dx=24x-x^3/3+C
3) (2+1/x^5)dx=2x=1/(4x^4)+C
4)(1/x+1/x^2)dx=ln(x)-1/x+C