sqrt(2) / x is rational only if x is a multiple of sqrt(2).
sqrt(2/x) is rational only if x is two times the square of some number (not necessarily a whole number).
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Yes, because the answer is 3/2 which is a rational number.
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is the square root of 3 rational
No, the square root of 1500 is not a rational number.
The square root of 225 is 15, which is a rational number.