Question

(x+y+2z)(x2 +y2+4z2-xy-2yz-2zx)

Answer 1

Answer:

Step-by-step explanation:

Hope this will help you.....

(x+y+2z)(x2+y2+4z2-xy-2yz-2zx).

( using identity : (a+b+c)2 )

(X+y+2z)2

= (x+y+2z)(x-y-2z).....