Respuesta :

GreenNugat

Answer:

-y^4+x^4+2*3^yx^2+3^2y

Step-by-step explanation:

mhanifa

Answer:

  • [tex]x^4+3x^2y+3xy^2+9y^2-y^4[/tex]

Step-by-step explanation:

  • [tex](x^2+3y+y^2)(x^2+3y-y^2)=[/tex]
  • [tex]x^4+3yx^2-x^2y^2+3x^2y+9y^2-3y^3+x^2y^2+3y^3-y^4=[/tex]
  • [tex]x^4+3x^2y+3xy^2+9y^2-y^4[/tex]