Answer
$c=36$.
Work Step by Step
Comparing $x^{2}+12x+c$ with $x^{2}+bx+c$, we see that $b=12$.
The value of $c$ so that it completes the square is
$c=(\frac{b}{2})^{2}=(\frac{12}{2})^{2}=36$
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 9 - Solving Quadratic Equations - 9.4 - Solving Quadratic Equations by Completing the Square - Exercises - Page 511: 8
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
