Answer
$5x^3+3x^2y-5y^3+y$
Work Step by Step
To combine like terms, add the coefficients.
$2x^3+4x^2y-4y^3+3x^3-x^2y+y-y^3=(2+3)x^3+(4+(-1))x^2y+((-4)+(-1))y^3+y=5x^3+3x^2y-5y^3+y$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 5 - Section 5.2 - Simplifying Algebraic Expressions - Exercise - Page 218: 39
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