উৎপাদকে বিশ্লেষন করুন: x³ + 4x² + x – 6

A (x + 2) (x + 3)

B (x - 1) (x + 2) (x + 3)

C (x - 1) (x + 6) (x - 1)

D (x + 1) (x + 2) (x - 3)

Solution

Correct Answer: Option B

x³ + 4x² + x – 6
= x³ - x² + 5x² -5x + 6x – 6
= x²(x - 1) + 5x(x - 1) + 6(x - 1)
= (x - 1) (x² + 5x +6)
= (x - 1) (x + 2) (x + 3)

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