Algebra 1

by Hall, Prentice

Published by Prentice Hall

ISBN 10: 0133500403

ISBN 13: 978-0-13350-040-0

Chapter 8 - Polynomials and Factoring - 8-1 Adding and Subtracting Polynomials - Practice and Problem-Solving Exercises - Page 478: 41

Answer

9x-1

Work Step by Step

The perimeter is the sum of the sides of the shape. P=a+b+c To find the third side a we isolate for a in the equation. a=P-b-c Given that P= 16x+3, b=5x-1 and c= 2x+5 we substitute it into the equation above. a= (16x+3)-(5x-1)-(2x+5) A= 16x+3-5x+1-2x-5 We combine like terms. A= 16x-5x-2x-5+3+1 A= 9x-1

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