To extract the root

(Math.) to ascertain the root of a number or quantity.

See also: Extract

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References in periodicals archive ?
They had to dismantle the facade to extract the root systems, but they rebuilt it once again in accordance to its original design.
While a power dental tool was being used to extract the roots, the patient heard a snap, and it was noted that the dental tool broke.
Prince Alwaleed adds: "America has to understand that if it wants to extract the roots of this ridiculous and terrible act, this issue has to be solved".