\"\"

\

The expression is \"\".

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The value are \"\", \"\" and \"\".

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\"\"         (Substitute \"\", \"\" and \"\")

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                            \"\"           (Evaluate powers: \"\")

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

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

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                            \"\"                             (Multiply)

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

\

Therefore, the value of expression is \"\".

\

\"\"

\

\"\".