# Chapter 5 - Polynomials and Factoring - 5.1 Introduction to Factoring - 5.1 Exercise Set: 73

$(2x^3+3)(2x^2+3)$

#### Work Step by Step

The given expression, $4x^5+6x^2+6x^3+9 ,$ simplifies to \begin{array}{l}\require{cancel} (4x^5+6x^2)+(6x^3+9) \\\\= 2x^2(2x^3+3)+3(2x^3+3) \\\\= (2x^3+3)(2x^2+3) .\end{array}

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