Question

Divide:
(9a2 - 1)(a? – 40-5)
(3a - 1)(-5)(3a +1)​

Answer 1

( 9a² - 1 ) ( a - 40 - 5 )

( 9a² - 1 ) ( a - 45 )

9a³ - 405a² - a + 45

( 3a - 1 ) ( - 5 ) ( 3a + 1 )

( - 15a + 5 ) ( 3a + 1 )

- 45a² - 15a + 15a + 5

- 45a² + 5

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