Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 5 - Section 5.4 - Multiplying Polynomials - Exercise Set - Page 290: 96

Answer

$2x$ and $3x$ cannot be added together as $3x$ has to be multiplied to $12-x$.

Work Step by Step

$2x$ and $3x$ cannot be added together as $3x$ has to be multiplied to $12-x$. The correct solution is: $=2x+(3x)(12)-(3x)(x) \\=2x+36x-3x^2 \\=38x-3x^2 \\=-3x^2+38x$
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