Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 2 - Real Numbers - 2.4 - Exponents - Problem Set 2.4: 63

Answer

$7x^2-3x+8$

Work Step by Step

By combining like terms, the given expression, $ x^2-2x-4+6x^2-x+12 ,$ simplifies to \begin{array}{l}\require{cancel} (x^2+6x^2)+(-2x-x)+(-4+12) \\\\= 7x^2-3x+8 .\end{array}
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