(3x9) over (x^2  6x +9)
please simplify and show how it is done
please simplify and show how it is done

==> (3x  9) / (x^2  6x + 9)
==> 3(x  3) / (x  3)(x  3)
==> 3 / (x  3) .... with or without brackets
==> 3(x  3) / (x  3)(x  3)
==> 3 / (x  3) .... with or without brackets