Web Search Results for "square root"

Square root - Wikipedia
18 Apr 2024 at 10:37pm
In mathematics, a square root of a number x is a number y such that =; in other words, a number y whose square (the result of multiplying the number by itself, or ) is x. For example, 4 and ?4 are square roots of 16 because = =.

Understanding square roots (video) | Khan Academy
20 Apr 2024 at 3:58am
Taking the square root is figuring out what number multiplied by itself is equal to the number under the square root symbol. So: ?4 = 2, because 2*2 OR 2^2 = 4 ?9 = 3, because 3 x 3 = 9 OR 3^2 = 9 Hopefully that helps!

Squares and Square Roots - Math is Fun
20 Apr 2024 at 1:56am
There is a fun method for calculating a square root that gets more and more accurate each time around: a) start with a guess (let's guess 4 is the square root of 10) b) divide by the guess (10/4 = 2.5) c) add that to the guess (4 + 2.5 = 6.5) d) then divide that result by 2, in other words halve it. (6.5/2 = 3.25)

Square root - Math.net
20 Apr 2024 at 8:01am
Square root. A square root is a number that can be multiplied by itself to give us the value under the radical symbol (also referred to as the radix). A square root is denoted as follows: In the figure above, z is the square root of x. We can also write this as "z raised to the power of 2 is equal to x" as follows: z 2 = x.

Intro to square roots (video) | Radicals | Khan Academy
19 Apr 2024 at 11:59am
Square roots mean you multiply the same number twice to equal another number. For example, if you have the number 81 then the square root is 9 because 9*9 is 81 or 81 divided by 9 is 9.

Square roots review (article) | Khan Academy
20 Apr 2024 at 7:11am
The square root of a number is the factor that we can multiply by itself to get that number. The symbol for square root is 1 . Finding the square root of a number is the opposite of squaring a number. Example: 4 4 or 4 2 = 16. So 16 = 4. If the square root is a whole number, it is called a perfect square!

Squares and Square Roots in Algebra - Math is Fun
19 Apr 2024 at 4:13am
Definition. Here is the definition: A square root of x is a number r whose square is x: r 2 = x. The Square Root Symbol. 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. It is called the radical, and always makes mathematics look important!

Square Roots | Brilliant Math & Science Wiki
19 Apr 2024 at 8:03am
Definition and Notation. The square root of a number a a, denoted \sqrt {a} a, is the number b b such that. b^ {2} = a\text { and }b\ge 0. b2 = a and b ? 0. The square root symbol " \sqrt {\ } " is also sometimes called a radical. The number or expression underneath the top line of the square root symbol is called the radicand.

Square Root -- from Wolfram MathWorld
18 Apr 2024 at 12:36pm
A square root of is a number such that . When written in the form or especially , the square root of may also be called the radical or surd . The square root is therefore an n th root with . Note that any positive real number has two square roots, one positive and one negative. For example, the square roots of 9 are and , since .

Square root - (Definition, Formula) | How to Find Square Roots? - BYJU'S
19 Apr 2024 at 5:35pm
In mathematics, a square root function is defined as a one-to-one function that takes a positive number as an input and returns the square root of the given input number. f (x) = ?x. For example, if x=4, then the function returns the output value as 2.

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