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Mathematics 18 Online
OpenStudy (codiehamilton):

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OpenStudy (vianne):

Did you try squaring those numbers?

OpenStudy (vianne):

Rooting* Whatever you call that :S

OpenStudy (vianne):

We already know B isn't irrational because root of 4 is 2, 2*2 = 4

OpenStudy (vianne):

How about A, C, D?

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