T o gramo = 64 ( X − w ) ( X 4 − 4 X 3 w − 10 X 2 y 2 − 4 X 2 w 2 + dieciséis X w 3 − 20 X y 2 w + 5 y 4 + dieciséis w 4 − 20 y 2 w 2 ) {\displaystyle Tog=64(xw)(x^{4}-4x^{3}w-10x^{2}y^{2}-4x^{2}w^{2}+16xw^{3} -20xy^{2}w+5y^{4}+16w^{4}-20y^{2}w^{2})\,\!\!} − 5 5 − 5 ( 2 z − 5 − 5 w ) ( 4 ( X 2 + y 2 − z 2 ) + ( 1 + 3 5 ) w 2 ) 2 {\displaystyle -5{\sqrt {5-{\sqrt {5}}}}(2z-{\sqrt {5-{\sqrt {5}}}}w)(4(x^{2}+y ^{2}-z^{2})+(1+3{\sqrt {5}})w^{2})^{2}}
