Answer
$-12x^6-13x^4-23x^2+6$
Work Step by Step
$(8x^4-14x^2+6)+(-12x^6-21x^4-9x^2)$
Group like terms
$=-12x^6+8x^4-21x^4-14x^2-9x^2+6$
Combine like terms
$=-12x^6-13x^4-23x^2+6$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Appendix A - Exercise Set - Page 975: 22
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