It's only needed when you write out expressions with ambiguity; you would never actually find a mathematician us BODMAS, BIDMAS or PEMDAS* because they always write out expressions that have no ambiguity!
*the only time you might find them using it is if they are teaching at school; and that seems to be the only reason it exists: to be a thing taught at school. And never to be used again if you become a mathematician, physicist or engineer.
Posted By: AstroCanary, Feb 13, 10:26:40
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