Question 901736
2) A = Lw = (2w+2)w = 40ft^2  
Solve for w 
2w^2 + 2w - 40 = 0
 w^2 + w - 20 = (w+5)(w-4), w = 4ft(using Positive Solution) and L = 10ft {{{2*4+2}}}
5) s^2 = 4s+96
solve for s
s^2 - 4x - 96 = (s+8)(s-12), s = 12 (using Positive Solution)
and 144 = 48+96