describe quadratic equation

Asked by  | 23rd Apr, 2008, 07:19: PM

Expert Answer:

quadratic equation is a polynomial equation of the second degree. The general form is

where a ≠ 0. (For a = 0, the equation becomes a linear equation.)

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 a constant term.

A linear equation is an algebraic equation in which each term is either a constant or the product of a constant times the first power of a variable. Such an equation is equivalent to equating a first-degree polynomial to zero. These equations are called "linear" because they represent straight lines in Cartesian coordinates. A common form of a linear equation in the two variables x and y is


That is, if a=0 in above quadritic equation, then we get a linear equation.

Answered by  | 23rd Apr, 2008, 09:10: PM

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