Question 117452
Try to ignore it.
Group the terms (w and non-w).  
{{{x^2 -6wy +3xy - 2wx=(x^2+3xy)+(-6wy-2wx)}}}
{{{x^2 -6wy +3xy - 2wx=(x(x+3y)-w(6y+2x))}}}
{{{x^2 -6wy +3xy - 2wx=(x(x+3y)-2w(x+3y))}}}
{{{x^2 -6wy +3xy - 2wx=(x+3y)(x-2w)}}}