1st, get the equation in standard form
2nd, take care of y
3rd, we know that quadratic equations result from the multiplication of two terms of the form (x+J) or (x+K) where J and K are any real number.
4th, we need to find J and K. These numbers are special because they multiply to be C (in this case -18) and add to B (in this case 3). So we must first write out the factors of -18.
The next step (unnumbered, my bad), is to find the factor pair of -18 that add to be 3.
The 5th and final step in factoring a quadratic equation (where A is 1) is to write the equation in the (x+J)(x+K)=0 form.