Question:উৎপাদকে বিশ্লেষণ কর: `x^3 + 4x^2 + x - 6`
Answer
ধরি, `f(x) = x^3 + 4x^2 + x - 6`
তাহলে, `f(1) = (1)^3 + 4(1)^2 + 1 - 6`
`= 1 + 4.1 + 1 - 6`
= 6 - 6
= 0
:. (x - 1), f(x) এর একটি উৎপাদক।
এখন, `x^3 + 4x^2 + x - 6`
`= x^3 - x^2 + 5x^2 - 5x + 6x - 6`
`= x^2 (x - 1) + 5x (x - 1) + 6 (x - 1)`
`= (x - 1) (x^2 + 5x + 6)`
`= (x - 1) (x^2 + 3x + 2x + 6)`
`= (x - 1) {x (x + 3) + 2(x + 3)}`
`= (x - 1) (x + 3) (x + 2)`
`= (x - 1) (x + 2) (x + 3)` (Ans)