# Chapter 4 - Polynomials - 4.3 Polynomials - 4.3 Exercise Set: 43

$4a^4$

#### Work Step by Step

By combining like terms, the given expression, $3a^4-2a+2a+a^4$, simplifies to \begin{array}{l} (3a^4+a^4)+(-2a+2a) \\\\= 4a^4+0 \\\\= 4a^4 .\end{array}

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