Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Skills Handbook - Evaluating and Simplifying Expressions - Exercises - Page 890: 24



Work Step by Step

We start with the given expression: $(r-1)^2$ To simplify an algebraic expression, we must eliminate any parentheses and combine like terms. We expand the squared term:$(r-1)(r-1)$ We apply the distributive property to multiply the binomials: $r^2-r-r+1$ We combine the like terms by subtracting: $r^2-2r+1$
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