Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 5 - Section 5.3 - Addition and Subtraction of Polynomials - Exercise - Page 221: 51


$4x^2 -4x+12$

Work Step by Step

We do the subtraction as follows: $$ (8x^2 - 2x+5)-(4x^2 + 2x -7)\\ =8x^2 - 2x+5-4x^2 - 2x +7\\ =4x^2 -4x+12 .$$
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