#### Answer

$-4x^{2}+2y+10$

#### Work Step by Step

We begin by combining like terms. To combine like terms, add the coefficients of the like variables:
$-x^{2}+2y-3x^{2}+10$
=$-4x^{2}+2y+10$

Published by
Prentice Hall

ISBN 10:
0133186024

ISBN 13:
978-0-13318-602-4

$-4x^{2}+2y+10$

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