Question 562961
let width be x
length = 2x-8

Artea = L*W

Area = x(2x-8)=120
2x^2-8x=120
/2
x^2-4x=60
x^2-4x-60=0
x^2-10x+6x-60=0
x(x-10)+6(x-10)=0
(x-10)(x+6)=0
x= 10 OR -6
ignore the negative value

width = 10 feet
length = 2x-8

2*10-8
20-8
=12

length = 12 feet