(y+z)^2 * ((xy*((2x+y+z)/((x+y)(x+z)))*((yx(y+z)+yz(y+x))/((y+x)(y+z))) + (x+y)*((xz(x+y)+xy(x+z))/((x+y)(x+z))) - (x+y)*((yx(y+z)+yz(y+x))/((y+x)(y+z))) - xy*((xz(x+y)+xy(x+z))/((x+y)(x+z)))*((2y+x+z)/((y+x)(y+z))))/(xy*((2x+y+z)/((x+y)(x+z)))-xy*((2y+x+z)/((y+x)(y+z))) + ((xz(x+y)+xy(x+z))/((x+y)(x+z))) - ((yx(y+z)+yz(y+x))/((y+x)(y+z))))) * (((x+z)*(((2x+y+z)/((x+y)(x+z))) - ((2z+x+y)/((z+x)(z+y)))) + ((xz(x+y)+xy(x+z))/((x+y)(x+z)))*((2z+x+y)/((z+x)(z+y))) - ((2x+y+z)/((x+y)(x+z))) * ((zx(z+y)+zy(z+x))/((z+x)(z+y))))/(((xz(x+y)+xy(x+z))/((x+y)(x+z))) - ((zx(z+y)+zy(z+x))/((z+x)(z+y))) + xz(((2x+y+z)/((x+y)(x+z))) - ((2z+x+y)/((z+x)(z+y)))))) - 2*(y+z)*(((xy*((2x+y+z)/((x+y)(x+z)))*((yx(y+z)+yz(y+x))/((y+x)(y+z))) + (x+y)*((xz(x+y)+xy(x+z))/((x+y)(x+z))) - (x+y)*((yx(y+z)+yz(y+x))/((y+x)(y+z))) - xy*((xz(x+y)+xy(x+z))/((x+y)(x+z)))*((2y+x+z)/((y+x)(y+z))))/(xy*((2x+y+z)/((x+y)(x+z)))-xy*((2y+x+z)/((y+x)(y+z))) + ((xz(x+y)+xy(x+z))/((x+y)(x+z))) - ((yx(y+z)+yz(y+x))/((y+x)(y+z))))) + yz*(((x+z)*(((2x+y+z)/((x+y)(x+z))) - ((2z+x+y)/((z+x)(z+y)))) + ((xz(x+y)+xy(x+z))/((x+y)(x+z)))*((2z+x+y)/((z+x)(z+y))) - ((2x+y+z)/((x+y)(x+z))) * ((zx(z+y)+zy(z+x))/((z+x)(z+y))))/(((xz(x+y)+xy(x+z))/((x+y)(x+z))) - ((zx(z+y)+zy(z+x))/((z+x)(z+y))) + xz(((2x+y+z)/((x+y)(x+z))) - ((2z+x+y)/((z+x)(z+y))))))) - ( (y+z)^2 * (((x+y)*(((2x+y+z)/((x+y)(x+z)))-((2y+x+z)/((y+x)(y+z)))) + ((xz(x+y)+xy(x+z))/((x+y)(x+z)))*((2y+x+z)/((y+x)(y+z))) - ((2x+y+z)/((x+y)(x+z)))*((yx(y+z)+yz(y+x))/((y+x)(y+z))))/(((xz(x+y)+xy(x+z))/((x+y)(x+z)))-((yx(y+z)+yz(y+x))/((y+x)(y+z))) + xy(((2x+y+z)/((x+y)(x+z))) - ((2y+x+z)/((y+x)(y+z)))))) * ((xz*((2x+y+z)/((x+y)(x+z)))*((zx(z+y)+zy(z+x))/((z+x)(z+y))) + (x+z)*((xz(x+y)+xy(x+z))/((x+y)(x+z))) - (x+z)*((zx(z+y)+zy(z+x))/((z+x)(z+y))) - xz*((xz(x+y)+xy(x+z))/((x+y)(x+z)))*((2z+x+y)/((z+x)(z+y))))/(xz*((2x+y+z)/((x+y)(x+z))) - xz*((2z+x+y)/((z+x)(z+y))) + ((xz(x+y)+xy(x+z))/((x+y)(x+z))) - ((zx(z+y)+zy(z+x))/((z+x)(z+y))))) - 2(y+z)*(((xz*((2x+y+z)/((x+y)(x+z)))*((zx(z+y)+zy(z+x))/((z+x)(z+y))) + (x+z)*((xz(x+y)+xy(x+z))/((x+y)(x+z))) - (x+z)*((zx(z+y)+zy(z+x))/((z+x)(z+y))) - xz*((xz(x+y)+xy(x+z))/((x+y)(x+z)))*((2z+x+y)/((z+x)(z+y))))/(xz*((2x+y+z)/((x+y)(x+z))) - xz*((2z+x+y)/((z+x)(z+y))) + ((xz(x+y)+xy(x+z))/((x+y)(x+z))) - ((zx(z+y)+zy(z+x))/((z+x)(z+y))))) + yz*(((x+y)*(((2x+y+z)/((x+y)(x+z)))-((2y+x+z)/((y+x)(y+z)))) + ((xz(x+y)+xy(x+z))/((x+y)(x+z)))*((2y+x+z)/((y+x)(y+z))) - ((2x+y+z)/((x+y)(x+z)))*((yx(y+z)+yz(y+x))/((y+x)(y+z))))/(((xz(x+y)+xy(x+z))/((x+y)(x+z)))-((yx(y+z)+yz(y+x))/((y+x)(y+z))) + xy(((2x+y+z)/((x+y)(x+z))) - ((2y+x+z)/((y+x)(y+z)))))))) = 0