Respuestas

  • Usuario de Brainly
2012-04-13T04:25:52+02:00

(x-y) (x2+y2) (x+y)

= (x-y)(x+y)=  (x2+y2) (x2+y2)  supongo que es asi 

2012-04-13T04:42:04+02:00

(x-y)(x2+y2)(x+y)

(x-y)(x+y)(x2+y2)

(x2-y2)(x2+y2)

::x4-y4