$\"\"$

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The inequality $\"\"$ .

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Solve inequality.

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Case (i): $\"\"$

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$\"\"$ (Original inequality)

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

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$\"\"$ (Substract $\"\"$ from each side)

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$\"\"$ (Apply additive inverse property: $\"\"$ )

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

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$\"\"$

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Case (ii): $\"\"$

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$\"\"$ (The inequality)

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$\"\"$ (Multiply each side by negative one and flip the symbol)

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$\"\"$ (Substract $\"\"$ from each side)

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$\"\"$ (Apply additive inverse property: $\"\"$ )

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

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Therefore,the solution set is $\"\"$ .

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$\"\"$

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The solution set is $\"\"$ .