Question 66528
length = l
width = l - 1
width*length = area
l(l - 1) >= 12
l^2 - l - 12 >= 0
(l^2 - 4l) + (3l - 12) >= 0
l(l - 4) + 3(l - 4) >= 0
(l + 3)(l - 4) >= 0
<=====(-3]-------[4)====>
Length can not be negative, so:
{{{l >= 4}}} while {{{w >= 3}}}