FIND THE MISSING SIDE LENGTH MATH HELP!!

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.

How do you do the foil method with polynomials?

Factor these polynomials and explain how 1. 12x - 3x^2 2. 20 - 240x^2