Question 583348
length =x
width = x-3

height = 2

Volume = L*W*H

x(x-3)*2= 80
2x^2-6x=80

2x^2-6x-80=0

/2
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 which is positive

L= 8 feet
W = 3 less = 5 feet