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# What is the fourth root of 16?

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The fourth root of 16 is 2. In mathematics, the fourth root of a number is a number r that yields z when raised to power 4, where 4 is the degree of the root.

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Roots are usually written in mathematics using the radical symbol. Any expression that contains a radical is referred to as a radical expression. Roots are important in various theories, particularly the theory of infinite series. The origin of roots is mostly speculative, but it is believed Arabic mathematicians started to use it as early as the 13th century. The square root is the most common root operation.

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## Related Questions

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To find the cube root of a number, find all of the number’s prime factors. A cube root is a number that, when cubed, gives the original number. If there are exactly three prime factors that are all the same, the number is a perfect cube.

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A square root is the result of "unsquaring" a number, or the reversal of the process of squaring. The root is, as its name implies, a squared number reduced to its most basic form.

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To find the magnitude of a vector, square the endpoints, add them and take the square root of that number. The magnitude will always be either zero or a positive number. It is defined as the length of a vector.