উৎপাদক বিশ্লেষণ করুন : x2 + 13x + 36

A (x+4) (x + 9)

B (x + 5) (x+8)

C (x + 3) (x+7)

D (x+4) (x + 5)

Solution

Correct Answer: Option A

x2 + 13x + 36
= x2 + 9x + 4x + 36
= x(x + 9) + 4(x + 9)
= (x + 9) (x + 4)

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