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en.wikipedia.org/wiki/Square_root

The principal square root function f(x) = √ x (usually just referred to as the "square root function") is a function that maps the set of nonnegative real numbers onto itself. In geometrical terms, the square root function maps the area of a square to its side length.. The square root of x is rational if and only if x is a rational number that can be represented as a ratio of two perfect...

www.math.com/students/calculators/source/square-root.htm

Free math lessons and math homework help from basic math to algebra, geometry and beyond. Students, teachers, parents, and everyone can find solutions to their math problems instantly.

www.mathsisfun.com/square-root.html

That was interesting! When we square a negative number we get a positive result.. Just the same as squaring a positive number: (For more detail read Squares and Square Roots in Algebra) . Square Roots. A square root goes the other way:. 3 squared is 9, so a square root of 9 is 3. A square root of a number is ...

www.khanacademy.org/.../alg1-radicals/v/understanding-square-roots

Learn how square root means what number multiplied by itself will result in the given number.

www.wikihow.com/Simplify-a-Square-Root

How to Simplify a Square Root. Simplifying a square root isn't as hard as it looks. To simplify a square root, you just have to factor the number and pull the roots of any perfect squares you find out of the radical sign. Once you've...

www.omnicalculator.com/math/square-root

Square root calculator. In some situations, you don't need to know the exact result of the square root. If this is the case, our square root calculator is the best option to estimate the value of every square root you desired.For example, let's say you want to know whether 4√5 is greater than 9.From the calculator, you know that √5 ≈ 2.23607, so 4√5 ≈ 4 * 2.23607 = 8.94428.

www.thefreedictionary.com/square+root

square root n. A divisor of a quantity that when squared gives the quantity. For example, the square roots of 25 are 5 and -5 because 5 × 5 = 25 and (-5) × (-5) = 25. square root n (Mathematics) a number or quantity that when multiplied by itself gives a given number or quantity: 2 is a square root of 4, usually written √4 or 41/2. square′ root ...

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

Square root calculator and perfect square calculator. Find the square root, or the two roots, including the principal root, of positive and negative real numbers. Calculate the positive principal root and negative root of positive real numbers. Also tells you if the entered number is a perfect square.

www.mathsisfun.com/algebra/square-root.html

This is the special symbol that means "square root", it is like a tick, and actually started hundreds of years ago as a dot with a flick upwards.

squareroots.org

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