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OpenStudy (nincompoop):
what is not correct about cross multiplication?
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OpenStudy (empty):
as opposed to dot multiplication? :P
OpenStudy (nincompoop):
lollll
OpenStudy (nincompoop):
okay, we teach or use the phrase cross-multiply without really showing why it works and even tho it appears to violate one of the key rules in maintaining an equation.
OpenStudy (empty):
honestly I don't even know what cross multiplication is anymore, could you explain it
OpenStudy (nincompoop):
same here... HAHA but here's the gist that I have so far gathered.
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OpenStudy (nincompoop):
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