\"\"

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The expression is\"\".

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Substitute value of x = 4 and y = 3.

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Then the expression is  \"\"

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

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1.      Evaluate the expressions inside Brackets/Parenthesis (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 pf operations is turned into phrase

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“Please Excuse My Dear Aunty Sally”\"\"

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First operation is evaluating the expression with in parenthesis.

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

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Next operation is squaring

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\"\"                                      (Squaring:  \"\" )

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Next operation is subtract

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

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Next operation is Multiplication.

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

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The value of given expression is \"\".