$\"\"$

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The equation is $\"\"$ .

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Solve the above equation by factoring method.

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$\"\"$

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$\"\"$

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Apply formula: $\"\"$ .

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$\"\"$

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Set 1 st factor equal to zero.

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$\"\"$

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Subtract 9 from each side.

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$\"\"$

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$\"\"$

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Substitute the value $\"\"$ .

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$\"\"$

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$\"\"$

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Extract square roots from each side.

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$\"\"$ . \ \

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Set 2 nd factor equal to zero.

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$\"\"$

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Add 9 to each side.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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Check:

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Substitute the value of $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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The above statement is true. \ \ \ \

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Substitute the value $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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The above statement is true.

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$\"\"$

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The solutions are $\"\"$ and $\"\"$ .