quadratic (redirected from quadratically)

quadratic, mathematical expression of the second degree in one or more unknowns (see polynomial). The general quadratic in one unknown has the form ax²+bx+c, where a, b, and c are constants and x is the variable. A quadratic equation ax²+bx+c=0 always has two roots, not necessarily distinct; these may be real or complex (see number). The quadratic formula gives the roots of any quadratic equation in terms of its coefficients a, b, and c. The expression b²−4ac is called the discriminant and vanishes when the two roots coincide. If a, b, and c are real and the discriminant is not less than zero, the roots are real.

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quadratic Maths

1. an equation containing one or more terms in which the variable is raised to the power of two, but no terms in which it is raised to a higher power

2. of or relating to the second power

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quadratic [kwä ′drad·ik]

(mathematics)

Any second-degree expression.