quadratic equation
التعريفات والمعاني
== English ==
=== Pronunciation ===
=== Noun ===
quadratic equation (plural quadratic equations)
(algebra) A polynomial equation of the second degree; an equation that can be rearranged in standard form as
a
x
2
+
b
x
+
c
=
0
{\displaystyle ax^{2}+bx+c=0}
, where
x
{\displaystyle x}
is an unknown value,
a
{\displaystyle a}
,
b
{\displaystyle b}
, and
c
{\displaystyle c}
are known numbers, and where
a
{\displaystyle a}
does not equal zero.
Coordinate terms: linear equation, cubic equation
==== Translations ====
=== Further reading ===
“quadratic equation, n.”, in OED Online , Oxford: Oxford University Press, launched 2000.
“quadratic equation”, in Merriam-Webster.com Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
“quadratic equation”, in The American Heritage Dictionary of the English Language, 5th edition, Boston, Mass.: Houghton Mifflin Harcourt, 2016, →ISBN.