SOLUTION: Square rote of 2 x square rote of 15 =

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Question 265886: Square rote of 2 x square rote of 15 =
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
Square rote of 2 x square rote of 15 =
%28sqrt%282%29%29%28sqrt%2815%29%29=x
%28sqrt%282%29%29%5E2%28sqrt%2815%29%29%5E2=x%5E2
2%2815%29=x%5E2
sqrt%2830%29=sqrt%28x%5E2%29
sqrt%2830%29=x
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an easier example of this problem below will help you understand the method of solving this problem:
%28sqrt%284%29%29%28sqrt%289%29%29=x
%28sqrt%284%29%29%5E2%28sqrt%289%29%29%5E2=x%5E2
4%289%29=x%5E2
sqrt%2836%29=sqrt%28x%5E2%29
6=x
Checking: since we know sqrt%284%29=2andsqrt%289%29=3, then 2%2A3=x, 6=x
so this method of solving is correct