Square root
"Square root" in a Sentence (4 examples)
Near-synonym: √
The square roots of 4 are 2 and −2, the square root of 0 is 0, and the square roots of −4 are 2i and −2i.
In √a̅+̅b̅, the horizontal bar or vinculum is actually a parenthesis that groups a+b. Without it, √a+b might mean b+√a̅ or it might mean √a̅+̅b̅. Nevertheless, the square-root sign without the vinculum is often used[…].
The square root of 4 is 2. No negative real square roots exist. Negative numbers have no real square roots.