Simplify Square Root of 21936

Here we will show you two methods that you can use to simplify the square root of 21936. In other words, we will show you how to find the square root of 21936 in its simplest radical form using two different methods.

To be more specific, we have created an illustration below showing what we want to calculate. Our goal is to make "A" outside the radical (√) as large as possible, and "B" inside the radical (√) as small as possible.

√21936 = A√B

Greatest Perfect Square Factor Method
The Greatest Perfect Square Factor Method uses the greatest perfect square factor of 21936 to simplify the square root of 21936. This is how to calculate A and B using this method:

A = Calculate the square root of the greatest perfect square from the list of all factors of 21936. The factors of 21936 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 457, 914, 1371, 1828, 2742, 3656, 5484, 7312, 10968, and 21936. Furthermore, the greatest perfect square on this list is 16 and the square root of 16 is 4. Therefore, A equals 4.

B = Calculate 21936 divided by the greatest perfect square from the list of all factors of 21936. We determined above that the greatest perfect square from the list of all factors of 21936 is 16. Furthermore, 21936 divided by 16 is 1371, therefore B equals 1371.

Now we have A and B and can get our answer to 21936 in its simplest radical form as follows:

√21936 = A√B

√21936 = 4√1371

Double Prime Factor Method
The Double Prime Factor Method uses the prime factors of 21936 to simplify the square root of 21936 to its simplest form possible. This is how to calculate A and B using this method:

A = Multiply all the double prime factors (pairs) of 21936 and then take the square root of that product. The prime factors that multiply together to make 21936 are 2 x 2 x 2 x 2 x 3 x 457. When we strip out the pairs only, we get 2 x 2 x 2 x 2 = 16 and the square root of 16 is 4. Therefore, A equals 4.

B = Divide 21936 by the number (A) squared. 4 squared is 16 and 21936 divided by 16 is 1371. Therefore, B equals 1371.

Once again we have A and B and can get our answer to 21936 in its simplest radical form as follows:

√21936 = A√B

√21936 = 4√1371

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Simplify Square Root of 21937
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