1 feet is 12 inches and there is 6 segments in one feet then in 12 feet there is 72 segments
(x)(x2)+(−4)(x2)+−16x+4
=x3+−4x2+−16x+4
Answer:
=x3−4x2−16x+4
This is what I got hope its helpful
This is what I got when I worked the problem, might want to double check to make sure. I hope this helps