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Root

1. Root of a number

The root of a number x is another number, which when multiplied by itself a given number of times, equals x. For example the second root of 9 is 3, because 3x3 = 9.

  • The second root is usually called the square root.
  • The third root is susually called the cube root
See Root (of a number).

2. Roots of a polynomial

The roots of a polynomial are the values of the variable that cause the polynomial to evaluate to zero. For example the roots of are +2 and -2.

See Roots of a polynomial.

Pages referring to 'root'

Definition of 'radical' as used in math
Definition of radical sign as used in math
Definition of radicand
Definition of the root of a number as used in math
Definition of the roots of a polynomial.