Fill in the Blank with One of the Words or Phrases

Multiple Choice

Fill in the blank with one of the words or phrases listed below.

- $\mathrm { A } ( \mathrm { n } )$ ــــــــــــــــ equation is one that can be written in the form $a x ^ { 2 } + b x + c = 0$ , where $a , b$ , and $c$ are real numbers and a is not 0 .

A) quadratic inequality
B) quadratic formula
C) discriminant
D) quadratic