# Chapter 8 - Polynomials and Factoring - 8-1 Adding and Subtracting Polynomials - Practice and Problem-Solving Exercises - Page 491: 49

No, the sum of two trinomials is not always a trinomial.

#### Work Step by Step

No, the sum of two trinomials is not always a trinomial. Example is provided below. (3$x^{2}$+2x-9)-(2$x^{2}$+2x-8) = 3$x^{x}$-2$x^{2}$+2x-2x-9+8 =$x^{2}$-1

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