Quadratic Formula

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The quadratic formula is the formula x = (-b +/- sqrt(b^2 - 4*a*c))/(2*a) that gives the roots of a quadratic equation of the form a*x^2 + b*x + c = 0.

Quadratic formula is a high school-level concept that would be first encountered in an algebra course. It is listed in the California State Standards for Algebra I.


Quadratic Equation: A quadratic equation is a polynomial equation in a single variable containing the square of the variable, but no higher powers.

Classroom Articles on Algebra (Up to High School Level)

  • Coefficient
  • Root
  • Geometric Mean
  • Subset
  • Infinity
  • Union