Answer
7
Work Step by Step
We factor the equation and then set the factors equal to zero to find:
$$ x^2 -14x+49 = 0 \\ (x-7)^2 =0 \\ x=7$$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 1 - 1.4 - Quadratic Equations and Applications - 1.4 Exercises - Page 111: 100
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