Please help me solve (3/x^2 -1/3) / (x-3)

Please show your work! Thanks in Advance! :)

[9/(3x^2)-x^2/(3x^2)]/(x-3)
[(9-x^2)/(3x^2)]/(x-3)
(9-x^2)/[3x^2(x-3)]
(3+x)(3-x)/[3x^2(x-3)]
-(3+x)(x-3)/[3x^2(x-3)]
-(3+x)/(3x^2)