Quadratic Equations
A quadratic equation is a polynomial
equation of the second degree. The general form is
ax2
+ bx + c =
0
The letters a, b, and c are called coefficients: the quadratic coefficient a is the coefficient of x2, the linear coefficient b is the coefficient of x, and c is the constant coefficient, also called the free term or constant term.
Quadratic equations may be solved by techniques such as completing the sqare or the quadratic formula.