1)x^2-2ax-8a^2/x^2+(2a+1)x+2a
2)12a^2-ax-x^2/x^2-(3a+2)x+6a

1)x^2-2ax-8a^2/x^2+(2a+1)x+2a=x^2-2ax-8a^2/x^2+2ax+x+2a2)12a^2-ax-x^2/x^2-(3a+2)x+6a=12a^2-ax-x^2=x^2+(-3a-2)x+6a=12a^2-ax-x^2=x^2-3ax-2x+6a