Answer
Please see the work below.
Work Step by Step
We know that
$U=7.0-8.0x+1.7x^2=3.5$
$\implies 1.7x^2-8.0x+3.5=0$
After solving for x, we obtain:
$x=\frac{8.0\pm\sqrt{(8.0)^2-4(1.7)(3.5)}}{2(1.7)}$
$x=0.49m$
$x=0.42m$
Essential University Physics: Volume 1 (4th Edition)
by Wolfson, Richard
Published by
Pearson
ISBN 10:
0-134-98855-8
ISBN 13:
978-0-13498-855-9
Chapter 7 - Exercises and Problems - Page 132: 50
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