Cubed Root Of 21 Math

In arithmetic and algebra the cube of a number n is its third power that is the result of multiplying three instances of n together.

Cubed root of 21 math. The cube of a number or any other mathematical expression is denoted by a superscript 3 for example 2 3 8 or x 1 3. Formula how to calculate the cubed root of a number. Some common roots include the square root where n 2 and the cubed root where n 3. For example the cube root of 125 is 5 since 5 5 5 125.

Determine the cubed root of 21. A cube root goes the other direction. The opposite of the cubed root is a cubed power of 3 calculation. It is possible to get the cube root of a negative number.

Cubed numbers are expressed with a little three at the top right of the number. N a b b n a. Unlike the square root the cubed root is always positive. Pull terms out from under the radical assuming real numbers.

In geometry cubed root can be used to find the length of a side of a cubed when the volume is known. Cube roots are expressed by using a little three on top of the radical symbol the symbol used for square roots. The cube root of a perfect cube is an integer. Use this calculator to find the cube root of positive or negative numbers.

N 3 n n 2 n n n. Cube roots is a specialized form of our common radicals calculator. The following table shows some perfect cubes and cube roots. The cube function is the function x x 3.

Scroll down the page for more examples of how to evaluate cube root of perfect cubes. The cube is also the number multiplied by its square. 3 x7 3 x 7 3 3. For example the real cube root of 8 denoted 3 8 is 2 because 2 3 8 while the other cube roots of 8 are 1 3 i and 1 3 i.

3 x21 x 21 3. The cubed root of 125 is 5 as 5 x 5 x 5 125. The cubed root of twenty one 21 2 7589241763811 how to calculate cube roots the process of cubing is similar to squaring only that the number is multiplied three times instead of two. Given a number x the cube root of x is a number a such that a 3 x if x positive a will be positive if x is negative a will be negative.

3 cubed is 27 so the cube root of 27 is 3. Simplify cube root of x 21. There is no. For example while three cubed equals nine the cube root of nine is three.

Calculating square roots and n th roots is fairly intensive. When dividing instead of multiplying the number is called a cube root.