Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 6 - Section 6.2 - Factoring Trinomials Whose Leading Coefficient is 1 - Exercise Set - Page 437: 111



Work Step by Step

Apply the FOIL method First$:\qquad 3x(3x)=9x^{2}$ Outer:$\qquad 3x(1)=3x$ Inner:$\qquad 4(3x) =12x$ Last:$\qquad 4(1) = 4$ Adding like terms, $3x+12x=15x,$ result = $9x^{2}+15x+4$
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