Respuesta :

lena3056
Answer: 6x^2-xy-y^2.

Tell me if you want step by step!!

Hope this helped. :)
loneguy

[tex](2x-y)(3x+y)\\\\=2x(3x+y) -y(3x+y)\\\\=6x^2 +2xy - 3xy -y^2\\\\=6x^2 -xy -y^2[/tex]