Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 5 - Section 5.5 - Multiplying Polynomials - Exercise Set: 90


$(3x+1)^2$ $9x^2+6x+1$

Work Step by Step

Area of largest rectangle: $(3x+1)(3x+1)=(3x+1)^2$ Sum of areas of smaller rectangles: $3x(3x)+1(3x)+1(3x)+1(1)$ $=9x^2+3x+3x+1$ $=9x^2+6x+1$
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