Answer
$7x^4+3x^2-1$
Work Step by Step
$(4x^4-3x^2-1)+(3x^4+6x^2)\longrightarrow$ use the associative property to reorder
=$(4x^4+3x^4)+(6x^2-3x^2)-1\longrightarrow$ combine like terms
=$7x^4+3x^2-1$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 8 - Polynomials and Factoring - 8-2 Multiplying and Factoring - Mixed Review - Page 484: 50
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