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Unfortunately, the browser used by Answers.com for posting questions is incapable of accepting mathematical symbols. This means that we cannot see the mathematically critical parts of the question. We are, therefore unable to determine what exactly the question is about and so cannot give a proper answer to your question.

Also, the question asks about "which expression". This implies that there is a set of expressions from which the answer is to be selected. However, no such set is given.

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Wiki User

10y ago

What else can I help you with?