$\"\"$

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(a)

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The expression is $\"\"$ .

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Rewrite the expression as $\"\"$ .

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Apply algebric formula : $\"\"$ .

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$\"\"$ .

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The factor form is $\"\"$ .

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$\"\"$

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(b)

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The expression is $\"\"$ .

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Rewrite the expression as $\"\"$ .

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Apply algebric formula : $\"\"$ .

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$\"\"$ .

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The factor form is $\"\"$ . $\"\"$

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(a) The factor form is $\"\"$ .

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(b) The factor form is $\"\"$ .