Question

find the product of xyz (x+y+z)​

Answer 1

Answer:

Step-by-step explanation:  We need to find the product of (x+y+z) and (x+y−z)

Their product is:  

=x(x+y−z)+y(x+y−z)+z(x+y−z)

=x  

2

+xy−xz+xy+y  

2

−yz+zx+yz−z  

2

 

=x  

2

+y  

2

−z  

2

+2xy