\"\"

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The expression is \"\"

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\"\"                           (Substitute \"\")

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\"\"                           (Evaluate power: \"\")

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\"\"                           (Multiply: \"\")

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\"\"                           (Subtract: \"\")

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\"\"                                                (Multiply: \"\")

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\"\"                                                            (Add: \"\")

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\"\"                                                       (Divide: \"\")\"\"

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The  value of expression is  \"\".