Question

( x+y+z )² + 2( x+y+z ) +1

Answer 1

Here is your answer hope this helps you.

Answer 2

`(x+y+z+1 {)}^(2)`

Explanation:

`(x+y+z {)}^(2) +2(x+y+z)+1`

`(x+y+z+1 {)}^(2)`

Hope it is helpful....