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Sqrt(2) is irrational. Multiply by sqrt(4.5).

Result is 3 which is rational.

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Q: How can you turn an irrational number into a rational number?
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What irrational numbers can turn into a rational number?

No irrational number can turn into a rational number by itself: you have to do something to it. If you multiply any irrational number by 0, the answer is 0, which is rational. So, given the correct procedure, every irrational number can be turned into a rational number.


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