ABC89981829389x^2y^3=1x=3y=2189x^ay^b=1ab1x=3a=2y=2b=318442002-a^x+b^y=c^z1x+1y+1z=1ABCABC-kPQP3kQ2kf(x)daf(x)=adaf(x)=azaz+bcz+d0101BSD