Question

All of the following expressions represent the sum of n and itself, except _____.

n + n
2n
n²

Answer 1

n^2 because 2n is the same as n+n, but n^2 is the same as the product of n and n

Answer 2

Answer:
`n^(2)`

Explanation:

(n + n) represents the definition of the sum of n and itself.

(2n) means two times n, wich is the same as adding n + n.

`n^(2)` actually represents the multiplication of n two times:
`n*n`

For example, if n=3:

`n+n=3+3=6`

`2n=2(3)=6`

`n^(2)=3^(2) =9`