Simplify Square Root of 42740

Here we will show you two methods that you can use to simplify the square root of 42740. In other words, we will show you how to find the square root of 42740 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.

√42740 = A√B

Greatest Perfect Square Factor Method
The Greatest Perfect Square Factor Method uses the greatest perfect square factor of 42740 to simplify the square root of 42740. 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 42740. The factors of 42740 are 1, 2, 4, 5, 10, 20, 2137, 4274, 8548, 10685, 21370, and 42740. Furthermore, the greatest perfect square on this list is 4 and the square root of 4 is 2. Therefore, A equals 2.

B = Calculate 42740 divided by the greatest perfect square from the list of all factors of 42740. We determined above that the greatest perfect square from the list of all factors of 42740 is 4. Furthermore, 42740 divided by 4 is 10685, therefore B equals 10685.

Now we have A and B and can get our answer to 42740 in its simplest radical form as follows:

√42740 = A√B

√42740 = 2√10685

Double Prime Factor Method
The Double Prime Factor Method uses the prime factors of 42740 to simplify the square root of 42740 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 42740 and then take the square root of that product. The prime factors that multiply together to make 42740 are 2 x 2 x 5 x 2137. When we strip out the pairs only, we get 2 x 2 = 4 and the square root of 4 is 2. Therefore, A equals 2.

B = Divide 42740 by the number (A) squared. 2 squared is 4 and 42740 divided by 4 is 10685. Therefore, B equals 10685.

Once again we have A and B and can get our answer to 42740 in its simplest radical form as follows:

√42740 = A√B

√42740 = 2√10685

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Simplify Square Root of 42741
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