Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.4 - Polynomials - Exercise Set - Page 56: 13

Answer

$6x^2-6x+2$ Degree:2

Work Step by Step

$ (5x^2 - 7x - 8) + (2x^2 - 3x + 7) - (x^2 - 4x - 3) =5x^2 - 7x - 8+2x^2 - 3x + 7-x^2+4x+3=6x^2-6x+2$ For monomials with the same power, you can add their coefficients to combine them. The degree of a polynomial is the highest power.
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