SOLUTION: Simplify. √28aČ ------ √7

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Question 168747: Simplify.
√28aČ
------
√7
Answer by jim_thompson5910(21667) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%2828a%5E2%29%2Fsqrt%287%29=sqrt%28%2828a%5E2%29%2F%287%29%29=sqrt%284a%5E2%29=sqrt%282%5E2a%5E2%29=sqrt%282%5E2%29sqrt%28a%5E2%29=2a


So sqrt%2828a%5E2%29%2Fsqrt%287%29=2a where a%3E=0


Notes:


1) Every variable is positive. So this means that a%3E=0


3) sqrt%28A%29%2Fsqrt%28B%29=sqrt%28A%2FB%29


2) sqrt%28x%5E2%29=x where x%3E=0