Simplify Square Root of 108

Here we will show you two methods that you can use to simplify the square root of 108. In other words, we will show you how to find the square root of 108 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.

√108 = A√B

Greatest Perfect Square Factor Method
The Greatest Perfect Square Factor Method uses the greatest perfect square factor of 108 to simplify the square root of 108. 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 108. The factors of 108 are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, and 108. Furthermore, the greatest perfect square on this list is 36 and the square root of 36 is 6. Therefore, A equals 6.

B = Calculate 108 divided by the greatest perfect square from the list of all factors of 108. We determined above that the greatest perfect square from the list of all factors of 108 is 36. Furthermore, 108 divided by 36 is 3, therefore B equals 3.

Now we have A and B and can get our answer to 108 in its simplest radical form as follows:

√108 = A√B

√108 = 6√3

Double Prime Factor Method
The Double Prime Factor Method uses the prime factors of 108 to simplify the square root of 108 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 108 and then take the square root of that product. The prime factors that multiply together to make 108 are 2 x 2 x 3 x 3 x 3. When we strip out the pairs only, we get 2 x 2 x 3 x 3 = 36 and the square root of 36 is 6. Therefore, A equals 6.

B = Divide 108 by the number (A) squared. 6 squared is 36 and 108 divided by 36 is 3. Therefore, B equals 3.

Once again we have A and B and can get our answer to 108 in its simplest radical form as follows:

√108 = A√B

√108 = 6√3

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Simplify Square Root of 109
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