If the cube of a number x is equal to a, that is, the cube of x is equal to a (x^3=a), that is, 3 xs multiplied consecutively equal a, then this number x is called the cube root of a, also called the cubic root.

Any number has only three cube roots, which are evenly distributed on the circle with the origin as the center and the arithmetic root as the radius. The points corresponding to the three cube roots form an equilateral triangle. Properties of cube roots: ⑴ Any number that is not 0 has 3 cube roots. ⑵ The cube root of 0 is 0. In general, if the cube of a number X is equal to a, then this number X is called the cube root of a (also called the third root). That is, if x³=a, then x is called the cube root of a. 0 is the cube root of 0.