1,m=y^2-3x,mn=9x^2-y^4=(3x-y^2)(3x+y^2) n=-3x-y^22,1.345*0.345*2.69-1.345^3-1.345*0.345^2=1.345*(0.345*2.69-1.345^2-0.345^2)=-1.345*(1.345^2-0.345*1.345*2+0.345^2)=-1.345*(1.345-0.345)^2=-1.345