Question 450602
L=W+2
area =length times width
A=L*W
A=(W+2)*W
143=(W+2)*W

143=W^2+2W
W^2+2W-143=0
find factors of -143 which add up to 2
-11 and 13 fit

(W-11)*(W+13)=0
W=11
W=-13
We can't use negative measurements.
11 and 11+2
11 and 13