Intermediate Algebra (6th Edition)

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

Chapter 5 - Section 5.3 - Polynomials and Polynomial Functions - Exercise Set: 46

Answer

$-18x^{2}+8x+19$

Work Step by Step

We are asked to subtract $(2x^{2}+3x+12)-(20x^{2}-5x-7)$. To subtract two polynomials, add the opposite of the second polynomial to the first polynomial. $(2x^{2}+3x+12)+(-20x^{2}+5x+7)$ Next, we can combine like terms. $(2x^{2}-20x^{2})+(3x+5x)+(12+7)=-18x^{2}+8x+19$
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