Quadratic Equations
Posted by
Ravi Kumar at Wednesday, May 5, 2010
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An equation which has the unknown quantity raised only to powers which are whole numbers and the highest power being the square of the unknown quantity, is called a quadratic equation.
The most general form of a quadratic equation is ax^2 + bx + c = 0.
There are two values of x that satisfy such a quadratic equation. These values are called the roots of the quadratic equation.
The roots of the above quadratic equation are given by (b±√(b^24ac))/2a
For ax^2 + bx + c = 0, sum of the roots = b/a; Product of the roots = c/a