Answer
$b=0$ and $c=-4$
Work Step by Step
$7x^2-4=0$
if $a=7$,
then $b=0$ and $c=-4$
because the standard form of the quadratic equation is:
$ax^2+bx+c=0$ when $a\ne 0$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 11 - Section 11.2 - Solving Quadratic Equations by Completing the Square - Vocabulary and Readiness Check - Page 775: 4
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