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White raven [17]
3 years ago
14

What number can you add to 2√ to get a rational number?

Mathematics
1 answer:
valentinak56 [21]3 years ago
4 0

In general, if p is a rational number and q is irrational, then  p +q is irrational. But obviously if q = - p (it's inverse additive), then, we have p + q= 0, i.e. a rational number. So, the answer is

- \sqrt{2}

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