Answer
$3x^{2n}-x^n+4$.
Work Step by Step
The given expression is
$=(x^{2n}-3x^n+5)+(4x^{2n}-3x^n-4)-(2x^{2n}-5x^n-3)$
Clear the parentheses.
$=x^{2n}-3x^n+5+4x^{2n}-3x^n-4-2x^{2n}+5x^n+3$
Add like terms.
$=3x^{2n}-x^n+4$.
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 5 - Section 5.1 - Introduction to Polynomials and Polynomial Functions - Exercise Set - Page 327: 102
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