Question

cuanto da (x+y+z)² con procedimiento porfa :D ​

Answer 1

Respuesta:

(x+y+z)2

=(x+y+z)(x+y+z)

=(x)(x)+(x)(y)+(x)(z)+(y)(x)+(y)(y)+(y)(z)+(z)(x)+(z)(y)+(z)(z)

=x2+xy+xz+xy+y2+yz+xz+yz+z2

=x2+2xy+2xz+y2+2yz+z2