Question:উৎপাদকে বিশ্লেষণ কর:

  `(3a + 1)^3 - (2a - 3)^3` 

Answer `(3a + 1)^3 - (2a - 3)^3`

  `= {(3a + 1) - (2a - 3)} {(3a + 1)^2 + (3a + 1) (2a - 3) + (2a - 3)^2}`

  `= (3a + 1 - 2a + 3) {(3a)^2 + 2.3a. 1 + (1)^2 + 3a. 2a + 1. 2a`

                            `- 3.3a - 3 + (2a)^2 - 2.2a .3 + (3)^2}`

   `= (a + 4) (9a^2 + 6a + 1 + 6a^2 + 2a - 9a - 3 + 4a^2 - 12a + 9`

   `= (a + 4) (19a^2 - 13a + 7)`   (Ans) 

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