Elementary Algebra

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

Chapter 5 - Exponents and Polynomials - Chapter 5 Review Problem Set: 11

Answer

-5$n^{2}$ - 2n

Work Step by Step

3($n^{2}$ - 2n - 4) - 4(2$n^{2}$ - n - 3) = Use the distributive property to remove round brackets. 3$n^{2}$ - 6n - 12 - 8$n^{2}$ + 4n + 12 = Group similar terms. (3$n^{2}$ - 8$n^{2}$) + (-6n + 4n) + (-12 + 12) = Simplify. -5$n^{2}$ - 2n
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