You can put this solution on YOUR website! I assume you mean the term to simplify is:
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First, look at the 49. You know that 7x7=49. So that means you can "pull out" a 7 from under the square root sign. Another way to think of it is that the square root of 49 is 7. This leaves you with:
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Now, consider that m^6. That is really m*m*m*m*m*m, right? The square root of m^6 is m^3. This leaves you with the following as your final answer:
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Good Luck,
tutor_paul@yahoo.com