Chapter 8 - Polynomials and Factoring - 8-2 Multiplying and Factoring - Mixed Review - Page 484: 51

$-5x^3-6x$

Work Step by Step

$(3x^3-2x)-(8x^3+4x)\longrightarrow$ use the distributive property to multiply by -1 =$(3x^3-2x)-8x^3-4x\longrightarrow$ use the associative property to reorder =$(3x^3-8x^3)+(-2x-4x)\longrightarrow$ combine like terms =$-5x^3-6x$

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