Compute (x^2 + 6x - 9) : (x - 3)

(x-3) is NOT a factor of the numerator (x^2+6x-9).

The way to get the quotient is by either long division or synthetic division, which gives the quotient as (x+9) with a remainder or 18.

In other words, the quotient is

(x+9) + 18 / (x-3)