It is a number k for which the following equation is true:. If it is 3, it is a cube root. The 8 in that example is called the radicand , the 3 is called the index , and the check-shaped part is called the radical symbol or radical sign. If two radicals are the same, they can be combined. This is when both of the indexes and radicands are the same.
This is how to find the perfect square and rationalize the denominator. Priya Indian. Neerja Indian. Zira US English. Oliver British. Wendy British. Fred US English. Tessa South African. How to say nth root in sign language? Select another language:. Please enter your email address: Subscribe. Discuss these nth root definitions with the community: 0 Comments.
Notify me of new comments via email. Cancel Report. Create a new account. Log In. Powered by CITE. Are we missing a good definition for nth root? Don't keep it to yourself Submit Definition. It also means that, unfortunately, additions and subtractions can be hard to deal with when under a root sign.
When a value has an exponent of n and we take the nth root we get the value back again The a means the absolute value of a , in other words any negative becomes a positive. So that is something to be careful of! Read more at Exponents of Negative Numbers.
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