quadratic (kwŏ-drāt'ĭk) Pronunciation Key
Relating to a mathematical expression containing a term of the second degree, such as x^{2} + 2. ◇ A quadratic equation is an equation having the general form ax^{2} + bx + c = 0, where a, b, and c are constants. ◇ The quadratic formula is x = -b ± √(b^{2} - 4ac)/2a. It is used in algebra to calculate the roots of quadratic equations. |