College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Chapter P Review - Exercises - Page 77: 59



Work Step by Step

Factor out the GCF $4$ to obtain: $=4(4-t^2)$ Since $4=2^2$, the expression above is equivalent to: $=4(2^2-t^2)$ Factor the difference of two squares using the formula $a^2-b^2=(a-b)(a+b)$ where $a=2$ and $b=t$ to obtain: $=4(2-t)(2+t)$
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