Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Appendix A - Review - A.3 Polynomials - A.3 Assess Your Understanding - Page A30: 45

Answer

$x^2+6x+8$

Work Step by Step

Use FOIL method. $(x+2)(x+4)=x\cdot x+x\cdot 4+2\cdot x+2\cdot 4$ Simplify. $=x^2+4 x+2x+8$ Combine like terms. $=x^2+6x+8$ Hence, the single polynomial answer in standard form is $x^2+6x+8$.
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