Quadratic
Equation
An equation includes only second degree polynomials.
Some examples are y = 3x^{2} – 5x^{2} +
1, x^{2} + 5xy + y^{2} =
1, and 1.6a^{2} +5.9a – 3.14
= 0.
Note: When there is only one variable, a quadratic equation can
be expressed in
the form ax^{2} + bx + c =
0 where a, b,
and c are all constants.
See
also
Quadratic formula
