Quadratic Equation

Explore QuadraticEquation on MathWorld

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

Quadratic equation 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.


Polynomial: A polynomial is a mathematical expression involving a sum of powers in one or more variables multiplied by coefficients.
Root: For a mathematical function, a root is a set of arguments for which the function assumes the value of zero.

Classroom Articles on Algebra (Up to High School Level)

  • Coefficient
  • Quadratic Formula
  • Geometric Mean
  • Subset
  • Infinity
  • Union