$\"\"$

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The expression is $\"\"$ .

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

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$\"\"$ (Substitute $\"\"$ )

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

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

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

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

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

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The value of expression is $\"\"$ . $\"\"$

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The value of expression is $\"\"$ .