Ok I think it means that the length 
of the rectangle is 2 m more than is width 
...
The area is A=
so:
Solving this equation (using the quadratic formula) you get 2 solutons. The only acceptable is the positive one, i.e.
, the length will then be 
.
The area is A=
so:
Solving this equation (using the quadratic formula) you get 2 solutons. The only acceptable is the positive one, i.e.