tolong jawab no 16. jawab yg bener yaaaaaa

semoga membantu yaa semangatt

16) ( x² - 5x - 6 ) × ( x² - 9 )
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( x - 3 ) × ( x + 1 )

= ( x + 1 )( x - 6 ) × ( x - 3 )( x + 3 )
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( x - 3 ) × ( x + 1 )

= ( x - 6 ) ( x + 3 ) ( B )