MODULE 4This is the required discussion board. Remember, there is a 3 post minimum in the discussions.Why do we cover Factoring Trinomials and simplifying Rational Expressions in the same Module? How are the two concepts connected?Unlike Polynomials, Rational Expressions have variables in the denominator. This means that Rational Expressions can be used to describe situations that Polynomials cannot. Find one example of how Rational Expressions are used in the real world.MODULE 5This is the required discussion board. Remember, there is a 3 post minimum in the discussions.Identify and discuss a real world application of graphing and the rectangular coordinate system. You may need to search the web for references. Cite any website that you use.