Question 49985
let width = x
length = x+3
area = length * width
  40 = X(X+3)
  40 = x^2+3x
  x^2+3x-40=0
x^2+8x-5x-40=0
x(x+8)-5(x+8)=0
(x+8)(x-5)=0
x=-8 OR x=5
width cannot be negative
width=5feet
length=8feet