$\"\"$

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The equation is $\"\"$ .

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For any real numbers a and b, where $\"\"$ , if $\"\"$ , then $\"\"$ or $\"\"$ .

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Case 1: $\"\"$ .

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Subtract 8 from each side.

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$\"\"$

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$\"\"$

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$\"\"$

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Divide each side by negative 4.

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$\"\"$

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Cancel common terms.

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$\"\"$ . \ \ $\"\"$

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Case 2: $\"\"$ .

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Subtract 8 from each side.

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$\"\"$

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$\"\"$

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$\"\"$

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Divide each side by negative 4.

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$\"\"$

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Cancel common terms.

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$\"\"$ . $\"\"$

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The option J is correct answer.