Question 74518
{{{sqrt(360)/sqrt(10)}}}
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You obviously caught the fact that this can be converted to:
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{{{sqrt(360/10)}}} and after dividing by the denominator of 10 this further simplifies
to {{{sqrt(36)}}}.
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One more step.  What's the square root of 36? It's 6, and that ends the simplification.
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By convention we normally assume that the square root just gives positive answers.  
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This final step should complete the problem. Hope that helps you.