# Chapter 8 - Polynomials and Factoring - Mid-Chapter Quiz - Page 498: 28

$x^4+2x^3+4y$

#### Work Step by Step

Answers will vary. At least one term has to have a variable different from that of the others. The variables can't be the same in all three terms. Also, at least one term has to have a coefficient of 1 or three coefficients that can't be factored.

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