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Suppose 3√6 is a rotational number,
Thus, by the property of rotational number,we can write,
3√6= p/q
Where p and q are distinct integers
q=0
3√6q = p
By squaring both sides
54q² = p² _ _ _ _(1)
p² is a multiple of 54
p is a multiple of 54,
Thus, we can write,
p=54a, where a is any number
From equation (1),
54q² = 2916a²
q²= 54a²
q² is a multiple of 54,
q is a multiple of 54,
Therefore, p and q are not distinct
Which is a contradiction,
3√6 is not a rotational number.
Hence proved .......
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