Question 987694
Let length =y
let width =x
 recall Y x X=80
 x=y-2 i.e 2cm less than y
 y x (y-2)=80
y^2 -2y=80
y^2 -2y-80=0
(y-10)(y+8)=0
therefore y=10 
recall that x=(y-2)=80 
if y=10 then x=10-2=8
length=10
width=8