Q: Is the square root of 84 a rational number?

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No. The square root of 84 is an irrational number

The square roots of 84 are irrational.

√84 is irrational.

irrational

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

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

84 is not the square of an integer, its square root, rounded to five decimal places, is ±9.16515.

Press 2ND and then the square root sign (above x2). Then type the number you want to find the square root of. Press ENTER to see the answer.

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

The square root of 84 is irrational and is approx 9.1652.

first find the factors of 84 if there is a perfect square (4,9,16,25, etc.) multiplied by another number to get 84, then use thatso 84 has 4 and 21, so take the square root of 4 which is and put it outside of the root sign and put 21 in it

The square root of 7056 is 84.

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)

No. The sq root of 84 is 9.16555515139. 81 is a perfect square, where the sq root is 9.

if you have a TI-84 you can hit math, then go down to the x before the square root sign

84

Yes. According to Wikipedia, "In mathematics, a rational number is any number that can be expressed as the quotient or fraction a/b of two integers, with the denominator b not equal to zero. Since b may be equal to 1, every integer is a rational number."So 84 can be expressed as 84/1, therefore it is a rational number.

Yes.

- 9.165151 or + 9.165151

Expressed as a surd, the square root of 84 is equal to 2 sqrt (21). √84 = √(4 x 21) = √4√21 = 2√21

the square root of 36 times the sine, in radians, of pi/2

Yes.

√84 = √(4x21) = √4 √21 = 2 √21

Any number that you can completely write down using digits is a rational number. Through hard work and perseverance, you succeeded in completely writing down "84", so it's a rational number. It's the ratio of 84 to 1 .

9.2