Question

(X+y+z)² what is the answer of it

Answer 1

Step-by-step explanation:

Here,

let (x + y) = a

and z = b

than,

according to formula of ( a +b)²

(x +y)² + 2(x +y) . z + ( z)²

x² +2xy + y² + 2xz + 2yz + z²

x² +y² + z² + 2xy + 2yz + 2xz answer