Question

A (blank) is the nonnegative Square root of a number

Answer 1

principal square root

Explanation:

Let
`x^2=a`.

Then
`x=\pm√(a)`

We have a negative square root for x, which is
`x=-√(a)` and a nonnegative square root,which is
`x=+√(a)`

The nonnegative square root is callled the principal square root .

Therefore the best complete to the statement;

A -------- is the nonnegative Square root of a number, is principal square root.