Answer
Please see below.
Work Step by Step
The exponents on $b$ in the expansion of $(a+b)^n$ increase by $1$ in each successive term. In the first term, the exponent on $b$ is $0$. The last term is $b^n$.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 10 - Section 10.4 - Mathematical Induction - Exercise Set - Page 1086: 51
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