$\"\"$

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The ranges of $\"\"$ and $\"\"$ is $\"\"$ and $\"\"$ ,then, $\"\"$ .

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Find the range of $\"\"$ .

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$\"\"$ (Original inequality)

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$\"\"$ (Multiply by $\"\"$ )

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$\"\"$ (Cancel common terms)

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Compre $\"\"$ the ranges are $\"\"$ and $\"\"$ .

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Hence, $\"\"$ and $\"\"$ .

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Therefore, consider the expression is $\"\"$ .

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

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

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$\"\"$ (Take out common term)

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$\"\"$

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$\"\"$ (Ranges of $\"\"$ )

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$\"\"$ (Multiply by $\"\"$ )

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

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$\"\"$ (Divide by $\"\"$ )

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$\"\"$ (Cancel common terms)

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Therefore, the range of the $\"\"$ is $\"\"$ . $\"\"$

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$\"\"$ .