Respuesta :
Hola!!!
[tex](-a-b-c)^2 = (-a -b-c)(-a-b-c)=
a^2 +a(2b +2c)+b^2 +2bc +c^2 [/tex]
Saludos!!!
[tex](-a-b-c)^2 = (-a -b-c)(-a-b-c)=
a^2 +a(2b +2c)+b^2 +2bc +c^2 [/tex]
Saludos!!!