#### Answer

Choice C

#### Work Step by Step

Quadratic equations are equations of the form $ax^2+bx+c=0,$ $a\ne0.$ Hence, the word the fits the blank is $\text{
Choice C
.}$

Published by
Pearson

ISBN 10:
0-32184-874-8

ISBN 13:
978-0-32184-874-1

Choice C

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