2x^2-7xy-22y^2-5x+35y-3 =(2x-11y)(x+2y)-5x+35y-3 =(2x-11y)(x+2y)+(x+2y)-(6x-33y+3) =(x+2y)(2x-11+1)-3(2x-11y+1) =(2x-11y+1)(x+2y-3)
