We perform a synthetic division
color(white)(aaaa)-2color(white)(aaaa)|color(white)(aaaa)-1color(white)(aaaa)-2color(white)(aaaaa)3color(white)(aaaaaa)4color(white)(aaaaaa)-4
color(white)(aaaaaa)color(white)(aaaaa)|color(white)(aaa)color(white)(aaaaaaaaa)2color(white)(aaaaa)0color(white)(aaaaa)-6color(white)(aaaaaa)4
color(white)(aaaaaaaaaa)------------------------------------------------------------
color(white)(aaaa)color(white)(aaaaaa)color(white)(aaaaaa)-1color(white)(aaaaaa)0color(white)(aaaaa)3color(white)(aaaaa)-2color(white)(aaaaaa)color(red)(0)
The remainder is =0
The quotient is =-x^3+3x-2