Question 41036
Length(l) = w + 2
Width(w) = w
Length * Width = Area
(w + 2)(w) = 80
w^2 + 2w = 80
w^2 + 2w - 80 = 0
(w - 8)(w + 10) = 0
{{{w = 8}}} or {{{w = -10}}}
Width can not be negative, so {{{-10}}} is ruled out.
Plug:
length = w + 2
length = 8 + 2
length = 10