The square roots of 4 are 2 and −2; the principal square root of 4 is 2.
Source: wiktionary
Principal root
Synonyms for "principal root" (1 found)
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Noun(1 words)
square root
Sample sentences
3 total sentences available.
The 3rd roots of −8 are 1 + i√3, −2 and 1 − i√3; the principal 3rd root of −8 is 1 + i√3 and the real root is −2.
Source: wiktionary
The 4th roots of 16 are 2, −2, 2i and −2i; the principal 4th root of 16 is 2.
Source: wiktionary