Answer
57
Work Step by Step
We can find the value of $P(7)$ by plugging 7 into the formula for $P(x)$.
$P(x)=x^{2}+x+1$, so $P(7)=7^{2}+7+1=49+7+1=57$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 5 - Section 5.3 - Polynomials and Polynomial Functions - Exercise Set - Page 279: 19
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