quadratic equation
• an second order equation or equation of degree 2.
• the degree is equal to the largest exponent or power.
• quadratic equations contain terms with powers no higher than two.
• often in the form ax^{2} + bx + c = 0 where x is the variable;
a, b and c are constants and a ≠ 0.
EXAMPLES:
Quadratic Equation Calculator
http://www.calculatorsoup.com/calculators/algebra/quadraticequationcalculator.php
Parabola Interactive Graphs
http://www.intmath.com/planeanalyticgeometry/parabolainteractive.php
