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#Mathematics Proposition; For all real numbers a and b.If ab=0 then, either a=0 or b=0.

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If a and b are two numbers such that ab = 0, then (a) a= 0 and b = 0 (b) a = 0 or b = 0 or both (c.

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DEMOSTRACIÓN ab=0 SI Y SOLO SI a=0 o b=0

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