Answer
Answer: $-5x^{4}$
Work Step by Step
$(-5x^{2})(x^{2})$
= $(-5)(x^{2})(x^{2})$
= $-5x^{4}$ ......................... $(Since (x^{2})(x^{2})=x^{(2+2)}=x^{4})$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 13 - Section 13.2 - The Ellipse and the Hyperbola - Exercise Set - Page 940: 48
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