Question 421716
Solutions:

Given: Area= 27 square feet

Length=x-3
width=x+3

Area= Length x width
27=(x-3)(x+3)                 we know (a-b)(a+b)=a^2-b^2

27= x^2 -9                  

x^2=36

x= square root of 36
x=6

Therefore length=x-3=6-3=3
Width=x+3=6+3=9

So, length=3feet
width=9 feet