Question:উৎপাদকে বিশ্লেষণ কর: `a^4 - 4a + 3` 

Answer মনে করি, `f(a) = a^4 - 4a + 3` `:. f(1) = (1)^4 - 4(1) + 3` `= 1 - 4 + 3 = 4 - 4 = 0` `:. (a - 1), f(a)` এর একটি উৎপাদক। এখন, `a^4 - 4a + 3` `= a^4 - a^3 + a^3 - a^2 + a^2 - a - 3a + 3` `= a^3 (a - 1) + a^2(a - 1) + a(a - 1) - 3(a - 1)` `= (a - 1) (a^3 + a^2 + a - 3)` আবার মনে করি, `g(a) = a^3 + a^2 + a - 3` তাহলে, `g(1) = (1)^3 + (1)^2 + (1) - 3` `= 1 + 1 + 1 - 3` `= 3 - 3 = 0` `:. (a - 1), g(a)` এর একটি উৎপাদক। এখন, `a^3 + a^2 + a - 3` `= a^3 - a^2 + 2a^2 - 2a + 3a - 3` `= a^2 (a - 1) + 2a(a - 1) + 3(a - 1)` `= (a - 1) (a^2 + 2a + 3)` `:. a^4 - 4a + 3 = (a - 1) (a - 1) (a^2 + 2a + 3)` (Ans) 

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