#### Answer

$\Rightarrow 5p^{4}q$

#### Work Step by Step

$\left( p+q\right) ^{5}=p^{5}+\binom 5 1 p^{4}q+\ldots +\binom 5 4 pq^4+q5$
$\binom 5 1 =\dfrac {5!}{1!\left( 5-1\right) !}=5$ then second term will be $\Rightarrow 5p^{4}q$

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

$\Rightarrow 5p^{4}q$

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