Solving Quadratic Equations.
The solution to the quadratic equation
is given by the quadratic formula:
Notes:
- The
gives two solutions, say and and are also known as the roots of- The value,
under the root in is called the discriminant. - Equation (52) can be written as
- If
then and are different real numbers. - If
then and are the same real number (repeated). - If
then and are complex and can be written as