The square of the sum of twice a number x and y

The square of the sum of twice a number x and y

Take this in algebraic expression in 3 parts:

1. Twice a number x means we multiply x by 2: 2x
2. The sum of twice a number x and y means we add y to 2x above: 2x + y
3. The square of the sum means we raise the sum (2x + y) to the second power below:

(2x + y)^2