Answer
$480x^2$
Work Step by Step
Need to find the fourth term.
Apply Binomial Theorem.
$(a+b)^n=\sum_{r=0}^n\dbinom{n}{r}(a)^{n-r}b^r$
$(x+2)^5=\dbinom{5}{3}(x)^2(2)^3$
or, $=60(x^2)(8)$
or, $=480x^2$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 11 - Review Exercises - Page 871: 62
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