A ladder that is 13 meters long is leaning against a wall. The distance between the foot of the ladder and the wall is 7 meters
less than the distance between the top of the ladder and the ground. Create an equation that models the length of the ladder in terms of x, which is the distance between the top of the ladder and the ground.
Polynomials are not closed under division. When you divide polynomials it is possible to get quotients with negative exponents or with fractions that have exponents in the denominator, and neither of these could be included in polynomials.