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socratic.org/questions/how-do-you-find-all-real-square-roots-of-4

The square roots of 4 are: sqrt(4) = 2 -sqrt(4) = -2 Every positive real number n has exactly two real square roots. The one we call the principal square root and denote as sqrt(n) is the positive one.

mathcentral.uregina.ca/QQ/database/QQ.09.01/frank2.html

It depends whether you define "square root of 4" as "the positive number whose square is 4" or "any number whose square is 4". I think that in the question "Find the square root of 4", the first definition is implicit, otherwise you should have been asked "Find all square roots of 4". If the instructions were then the answer is 2.

www.mathway.com/popular-problems/Algebra/203560

Algebra. Simplify square root of 9/4. Rewrite as . Simplify the numerator. Tap for more steps... Rewrite as . Pull terms out from under the radical, assuming positive real numbers. Simplify the denominator. Tap for more steps... Rewrite as .

www.calculatorsoup.com/calculators/algebra/squareroots.php

Square roots is a specialized form of our common roots calculator. "Note that any positive real number has two square roots, one positive and one negative. For example, the square roots of 9 are -3 and +3, since (-3) 2 = (+3) 2 = 9. Any nonnegative real number x has a unique nonnegative square root r; this is called the principal square root ...

en.wikipedia.org/wiki/Square_root

For example, 4 and −4 are square roots of 16 because 4 2 = (−4) 2 = 16. Every nonnegative real number a has a unique nonnegative square root, called the principal square root , which is denoted by √ a , where √ is called the radical sign or radix .

www.infoplease.com/.../numbers-formulas/table-of-squares-and-square-roots

Use this table to find the squares and square roots of numbers from 1 to 100. You can also use this table to estimate the square roots of larger numbers. For instance, if you want to find the square root of 2000, look in the middle column until you find the number that is closest to 2000.

answers.yahoo.com/question/index?qid=20081231145658AAdZ2yi

Answer √4 = 2 _____... When the square root of a number is asked for with no other conditions, the answer is simply the principal square root.

www.squarerootcalculator.co/perfect-squares.html

Perfect Squares and their Square Roots Perfect Square: Taking a positive integer and squaring it (multiplying it by itself) equals a perfect square. Example: 3 x 3 = 9 Thus: 9 is a perfect square. Taking the square root (principal square root) of that perfect square equals the original positive integer.

www.mathwarehouse.com/solved-problems/square-roots/calculations

19,999 calculated Square Roots. Next» Click to see how to reduce the square roots below into simplest radical form square root of -99998 square root of -99997 square root of -99996 square root of -99995 square root of -99994 square root of -99993 square root of -99992 square root of -99991 square root of -99990 square root of -99989

coolconversion.com/math/square-root-of/Square-root-of_4.4_

Square root of 4.4. Here is the answer to questions like: Square root of 4.4 or what is the square root of 4.4? Use the square root calculator below to find the square root of any imaginary or real number. See also in this web page a Square Root Table from 1 to 100 as well as the Babylonian Method or Hero's Method.