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      Quadratic

      /kwɒˈdrætɪk/

      Meaning & Definition

      noun
      A polynomial of degree two.
      The expression x² - 4x + 4 is a quadratic.
      adjective
      Relating to or in the form of a quadratic equation.
      The quadratic function has a parabolic graph.
      Involving the second power of an unknown quantity or variable.
      To find the roots, we need to apply the quadratic formula.

      Etymology

      From Latin quadratus, meaning 'square'.

      Common Phrases and Expressions

      quadratic equation:
      An equation of the form ax² + bx + c = 0 where a, b, and c are constants.
      quadratic function:
      A function defined by a quadratic polynomial.
      quadratic formula:
      The formula used to find the roots of a quadratic equation.

      Related Words

      parabola
      A symmetrical open plane curve formed by the intersection of a cone with a plane parallel to its side.
      polynomial
      An algebraic expression consisting of variables and coefficients, involving only the operations of addition, subtraction, multiplication, and non-negative integer exponents.

      Slang Meanings

      Quadratic riddle
      That math problem was a real quadratic riddle to solve.
      Quadratic grind
      I have to hit that quadratic grind on my homework tonight.