Simplify Square Root of 67872

Here we will show you two methods that you can use to simplify the square root of 67872. In other words, we will show you how to find the square root of 67872 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.

√67872 = A√B

Greatest Perfect Square Factor Method
The Greatest Perfect Square Factor Method uses the greatest perfect square factor of 67872 to simplify the square root of 67872. 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 67872. The factors of 67872 are 1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 101, 112, 168, 202, 224, 303, 336, 404, 606, 672, 707, 808, 1212, 1414, 1616, 2121, 2424, 2828, 3232, 4242, 4848, 5656, 8484, 9696, 11312, 16968, 22624, 33936, and 67872. Furthermore, the greatest perfect square on this list is 16 and the square root of 16 is 4. Therefore, A equals 4.

B = Calculate 67872 divided by the greatest perfect square from the list of all factors of 67872. We determined above that the greatest perfect square from the list of all factors of 67872 is 16. Furthermore, 67872 divided by 16 is 4242, therefore B equals 4242.

Now we have A and B and can get our answer to 67872 in its simplest radical form as follows:

√67872 = A√B

√67872 = 4√4242

Double Prime Factor Method
The Double Prime Factor Method uses the prime factors of 67872 to simplify the square root of 67872 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 67872 and then take the square root of that product. The prime factors that multiply together to make 67872 are 2 x 2 x 2 x 2 x 2 x 3 x 7 x 101. 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 67872 by the number (A) squared. 4 squared is 16 and 67872 divided by 16 is 4242. Therefore, B equals 4242.

Once again we have A and B and can get our answer to 67872 in its simplest radical form as follows:

√67872 = A√B

√67872 = 4√4242

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