(x^3-2x^2+ax-1)/(bx-1)=x^2-x+2.....1(bx-1)(x^2-x+2)+1=bx^3-bx^2+2bx-x^2+x-2+1=bx^3-(b+1)x^2+2bx-1=x^3-2x^2+ax-1b=1 a=2b=2
