If α and β are the roots of the equation ax2 + bx + c = 0, then α / [ɑβ + b] + β / [aɑ + b] =

 A quadratic equation is an equation of degree 2, meaning that the highest exponent of this function is 2.

The standard form of a quadratic is y = ax2 + bx + c,

where a, b, and c are numbered and a cannot be 0.

Examples of quadratic equations include all of these:

• y = x2 + 3x + 1
• y = x2