Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 8 - Polynomials and Factoring - 8-5 Factoring x2+bx+c - Practice and Problem-Solving Exercises - Page 517: 53



Work Step by Step

You are given $s^{2}$-10st-75$t^{2}$. Factor it out: $s^{2}$-15st+5st-75$t^{2}$ -break out the middle value- ($s^{2}$-15st)+(5st-75$t^{2}$) -group the first two and last two terms- s(s-15t)+5t(s-15t) -Find the GCF of each grouping- (s+5t)(s-15t) -factor out the common term- =(s+5t)(s-15t)
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