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 515: 30


The dimensions are d-2 by d+9, where both dimensions must be greater than 0.

Work Step by Step

You are given $d^{2}$-7d-18. Factor it out: $d^{2}$+2d-9d-18 -break out the middle value- ($d^{2}$+2d)+(-9d-18) -group the first two and last two terms- d(d+2)-9(d+2) -Find the GCF of each grouping- (d+2)(d-9) -factor out the common term- =(d+2)(d-9)
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