Question

3/x+3   +   3/x^2-3x    +    2x/9-x^2

Answer 1

3/(х+3) + 3/ х(х-3) - 2х / (х-3)(х+3) = ( 3х^2-9х+3х+9-2х^2) / х(х+3)(х-3) = (х^2 - 6х + 9)/ х(х+3)(х-3) =х-3 / х(х+3).