Answer
$x^4-16$
Work Step by Step
RECALL:
$(a-b)(a+b) = a^2-b^2$
Use the formula above with $a=x^2$ and $b=4$ to obtain:
$=(x^2)^2-4^2$
Note that $(x^2)^2 = x^{2\cdot2} = x^4$.
Thus, the expression above is equivalent to:
$=x^4-16$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter R - Section R.4 - Polynomials - R.4 Assess Your Understanding - Page 47: 2
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
