How to Add and Subtract Polynomial Functions | (f+g)(x), (f+g)(3), (f-g)(x), and (f-g)(-2)

In this video we learn how to Add and Subtract Polynomial Functions. For the functions f(x)=3x²-5x+7 and g(x)=x²-4x-3, we find: (f+g)(x), (f+g)(3), (f-g)(x), and (f-g)(-2).

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Marecek, L., & Mathis, A. H. (2020). Add and Subtract Polynomials. In Intermediate Algebra 2e. OpenStax. https://openstax.org/books/intermediate-algebra-2e/pages/5-1-add-and-subtract-polynomials. License: CC BY 4.0. Access for free at https://openstax.org/books/intermediate-algebra-2e/pages/1-introduction