Y add mul pow x3 c mul pow x1 c add mul c x1 add mul c pow x3 c mul x1 mul x1 pow add div c c x1 c mul c mul pow x3 c mul pow x1 c add c add x1 add mul c pow x3 c mul x3 add mul c x1 mul x1 mul x1 pow add div c c x1 c