Order of Operations:

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To simplify the expression follow the order of operations: (PEMDAS)

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1.    Evaluate the expressions inside the Parenthesis/Brackets (P).

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2.    Evaluate Powers/Exponents (E).

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3.    Multiply and/or Divide in order from left to right (MD).

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4.    Add and/or Subtract in order from left to right (AS). \ \

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A simple technique for remembering the order of operations is turned

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into phrase "Please Excuse My Dear Aunty Sally"

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\"\"

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The expression is \"\".

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\"\"         (Substitute  \"\" and n = \"\")

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First operation is multiplication.

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\"\"           (Multiply: \"\")

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

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Next operation is division.

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\"\"                   (Divide: \"\")

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Next operation is subtraction.

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

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The simplified expression value is 20.