Answer
$a^2+4a+6$
Work Step by Step
Plugging in $x=a+1$: $f(a+1)=(a+1)^2+2(a+1)+3=a^2+2a+1+2a+2+3=a^2+4a+6$
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 - Section 11.4 - The Binomial Theorem - Exercise Set - Page 866: 84
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