My teacher says confusing stuff about absolute value... – math.stackexchange.com

My teacher says confusing stuff about absolute value... – math.stackexchange.com

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He says (direct qoute), "In higher mathematics, the absolute value of a number, $|x|$, is equal to positive and negative x if x is a positive number." Then he wrote this thing: $|x|=\pm x\,,\,\,\ ...

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