Simplify Square Root of 72100

Here we will show you two methods that you can use to simplify the square root of 72100. In other words, we will show you how to find the square root of 72100 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.

√72100 = A√B

Greatest Perfect Square Factor Method
The Greatest Perfect Square Factor Method uses the greatest perfect square factor of 72100 to simplify the square root of 72100. 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 72100. The factors of 72100 are 1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 103, 140, 175, 206, 350, 412, 515, 700, 721, 1030, 1442, 2060, 2575, 2884, 3605, 5150, 7210, 10300, 14420, 18025, 36050, and 72100. Furthermore, the greatest perfect square on this list is 100 and the square root of 100 is 10. Therefore, A equals 10.

B = Calculate 72100 divided by the greatest perfect square from the list of all factors of 72100. We determined above that the greatest perfect square from the list of all factors of 72100 is 100. Furthermore, 72100 divided by 100 is 721, therefore B equals 721.

Now we have A and B and can get our answer to 72100 in its simplest radical form as follows:

√72100 = A√B

√72100 = 10√721

Double Prime Factor Method
The Double Prime Factor Method uses the prime factors of 72100 to simplify the square root of 72100 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 72100 and then take the square root of that product. The prime factors that multiply together to make 72100 are 2 x 2 x 5 x 5 x 7 x 103. When we strip out the pairs only, we get 2 x 2 x 5 x 5 = 100 and the square root of 100 is 10. Therefore, A equals 10.

B = Divide 72100 by the number (A) squared. 10 squared is 100 and 72100 divided by 100 is 721. Therefore, B equals 721.

Once again we have A and B and can get our answer to 72100 in its simplest radical form as follows:

√72100 = A√B

√72100 = 10√721

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