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Yes. The square root of a natural number (positive integer) is either an integer, or an irrational number.

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โˆ™ 2010-09-05 21:13:52
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Q: Is the square root of 5 and squa re root of 21 irrational?
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Is the square root of 21 an irrational or a rational number?

irrational


Is negative square root of 21 irrational?

Yes, as is the positive square root.


Is the square root of 21 a rational number?

No. The square root of an integer is either an integer, or an irrational number.


The square root of 21 is it rational or irrational?

irrational, it has a never ending decimal


What is the square root of 84 simplify?

It is: 2 times the square root of 21 and it's an irrational number


Is 21 over the square root of 4 a rational or irrational?

It is equal to 21/2 which is a rational number


What is and irrational number between 4.5 and 4.6?

the square root of 21


Is the square root of 84 a rational number?

No because it is 2 times the square root of 21 which is an irrational numberThe square root of 84 is not a rational number


Is the square root of 21 a real number?

Yes, albeit an irrational number


What is an irrational number between 4.5 and 4.6?

the square root of 21


How do you get the square of 84?

If you mean 84 squared then it is 84*84 = 7056 If you mean the square root of 84 then it is 2 times the square root of 21 which is an irrational number


Is the square root of eighteen an irrational number?

Yes. It would be 21/2 * 91/2, or "three root two". Root two is an irrational number, so it's products - such as root 18, will be as well.


What is the square root of -21?

The square root of -21 is: 4.582576 i


What is the square root of 21?

The square root of 21 is 4.58257569495584.


Square root of 21?

The square root of 21 is 4.58257569495584.


What is the square root of 441?

21The square root of 441 is 21


Is 4.5 the square root of 21?

4.6 is a better approximation to the square root of 21.


Multiply negative root 8 4 and 6 plus root 6 4?

Root 64 is 8, if by root you mean the square root. Then the problem become -square root 84(6+8) which is the - square root of 84(14) But square root of 84 is 2(square root of 21) so the final answer comes from -2(square root 21)x14 which is -28square root (21)


What is the square root of 21 Times Square root 15?

Your answer is: 17.7482393


How do you find square root of square 21?

The square root and square functions are inverse of one another EXCEPT that square root is not really a function: it is a 1-to-many mapping. So sqrt(square(21)) = sqrt(441) = ±21


What is the principle square root of 49 over 21 squared?

(√(a))²=a The square root and the square cancel to leave just 49/21■


How do you simplify the square root of 2205?

21 times the square root of 5.


What is the simplest radical from of the square root of 84?

First note that 84=4x21 and 4 is a perfect square. So square root of (84)=square root (4x21)=Square root (4) Square root (21)= 2 multiplied by the square root of 21. You can also write this using rational exponents, but this is not in radical form. It is an equivalent expression, however. 2 x (21)1/2


What is the square rout of 21?

There is no exact value for the square root of 21. √21 = 4.5825757 (7dp)


The square root of 441?

21