Simplify Square Root of 19215

Here we will show you two methods that you can use to simplify the square root of 19215. In other words, we will show you how to find the square root of 19215 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.

√19215 = A√B

Greatest Perfect Square Factor Method
The Greatest Perfect Square Factor Method uses the greatest perfect square factor of 19215 to simplify the square root of 19215. 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 19215. The factors of 19215 are 1, 3, 5, 7, 9, 15, 21, 35, 45, 61, 63, 105, 183, 305, 315, 427, 549, 915, 1281, 2135, 2745, 3843, 6405, and 19215. Furthermore, the greatest perfect square on this list is 9 and the square root of 9 is 3. Therefore, A equals 3.

B = Calculate 19215 divided by the greatest perfect square from the list of all factors of 19215. We determined above that the greatest perfect square from the list of all factors of 19215 is 9. Furthermore, 19215 divided by 9 is 2135, therefore B equals 2135.

Now we have A and B and can get our answer to 19215 in its simplest radical form as follows:

√19215 = A√B

√19215 = 3√2135

Double Prime Factor Method
The Double Prime Factor Method uses the prime factors of 19215 to simplify the square root of 19215 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 19215 and then take the square root of that product. The prime factors that multiply together to make 19215 are 3 x 3 x 5 x 7 x 61. When we strip out the pairs only, we get 3 x 3 = 9 and the square root of 9 is 3. Therefore, A equals 3.

B = Divide 19215 by the number (A) squared. 3 squared is 9 and 19215 divided by 9 is 2135. Therefore, B equals 2135.

Once again we have A and B and can get our answer to 19215 in its simplest radical form as follows:

√19215 = A√B

√19215 = 3√2135

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