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What Are The Definitions of Square Root, Radical, And Radicand?
What Are Square Root, Radical, And Radicand?
A
Square Root
of a positive whole number "n" is written √
n
. This notation, √
n
, is pronounced "square root of n". So what does √
n
mean? Well if we write the square root of "n" times the square root of "n", we get an answer of "n". Here is an abstract example √
n
× √
n
= n. Here is a real example: √
9
× √
9
= 3 × 3 = 9. Or another way √
9
=
√
3 × 3
= 3
.
We can take the square root of any positive number; for example √5 equals 2.2360679774997896964091736687313...
∞
. And
√
5 × 5
= 5
The √ is called the
Radical
sign. The number under the radical sign is called the
Radicand
.
Perfect squares have
Whole Number
roots.
The square roots of all other positive numbers are on the number line, but they are
Irrational Number
. For example: √2 equal 1.414213562373095048801...
∞
Input Syntax
Input Syntax
Math Syntax
Answer
r2
√
2
1.414213562373...
∞
r9.3
√
9.3
3.049590136395...
∞
r25
√
25
5
r25
√
25
The square root of a negative number is beyond the scope of this discussion.
Please Read!
To use this calculator is easy. You can use any input format shown in the table above. You indicate the radical sign with the letter "r". Example r25 = √
25
= √
5 x 5
= 5.
Square Root Calculator
Enter The Number Here Then Press The SUBMIT Button
See More About Exponents And Roots