1/10 x4+3x2+1=x4-x3+(x3+3x2+x)-x+1=x4-x3+x(x2+3x+1)-x+1=x4-x3-x+1=x4-(x3+3x2+x)+3x2+1=x4-x(x2+3x+1)+3x2+1=x4+3x2+1=(x4+3x3+x2)-3x3+2x2+1=x2(x2+3x+1)-3x3+2x2+1=-3x3+2x2+1=(-3x3-9x2-3x)+11x2+3x+1=-3x(x2...