Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 8 - Polynomials and Factoring - 8-4 Multiplying Special Cases - Practice and Problem-Solving Exercises - Page 496: 52

Answer

16x$^{2}$ + 160x + 400

Work Step by Step

If each side is going to be four times as long as the original deck, then you must multiply the original length of (x + 5) by 4: 4(x + 5) = 4x + 20 Now, to find the area, multiply 4x +20 times itself: (4x + 20)(4x + 20) = 16x$^{2}$ + 80x + 80x + 400 = 16x$^{2}$ + 160x + 400
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