Question 939457
w the original width
(2w-1 - 1)(w+1) = 16m^2  (a Square 4 by 4)
...either(2w+2) 0r (w+1) = 4
w + 1 = 4m
w = 3m  and L = 5m {{{2*3-1}}}
...
and...checking
If 1 meter is cut from the length and added to the width ...
4cm(4cm) = 16m^2