9a2-4b2+16c2-1-4b-24ac resolve in facor
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Answer:
( 3a - 2b - 4c - 1 ) ( 3a + 2b - 4c + 1 )
Step-by-step explanation:
9a² - 4b² + 16c² - 1 - 4b - 24ac
= ( 9a² - 24ac + 16c² ) - ( 4b² + 4b + 1 )
= ( (3a)² - 2(3a)(4c) + (4c)² ) - ( (2b)² + 2(2b) + 1 )
= ( 3a - 4c )² - ( 2b + 1 )²
= ( 3a - 4c - 2b - 1 ) ( 3a - 4c + 2b + 1 )
= ( 3a - 2b - 4c - 1 ) ( 3a + 2b - 4c + 1 )
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