Question:উৎপাদকে বিশ্লেষণ কর: `3a^3 + 2a + 5` 

Answer ধরি, `f(a) = 3a^3 + 2a + 5` তাহলে `f(- 1) = 3 (- 1)^3 + 2 (- 1) + 5` `= - 3 - 2 + 5 = 0` `:. {a - (- 1) = (a + 1). f(a)` এর একটি উৎপাদক। এখন, `3a^3 + 2a + 5` `= 3a^3 + 3a^2 - 3a^2 - 3a + 5a + 5` `= 3a^2 (a + 1) - 3a (a + 1) + 5(a + 1)` `= (a + 1) (3a^2 - 3a + 5)` (Ans) 

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utpadoke bisholeshn karo: `3a^3 + 2a + 5`
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