SOLUTION: Is 2 square root of 7 irrational?

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Question 1151081: Is 2 square root of 7 irrational?
Answer by math_helper(2461) About Me  (Show Source):
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Yes, +2sqrt%287%29+ is irrational

Here's how to tell: for a nonnegative integer n, if the square root of n is not an integer, then it is irrational. Any integer multiple of that square root is therefore also irrational.