x4 - 2x2 + 1 কে উৎপাদকে বিশ্লেষণ করুন। 

A (x+1) (x-1)2 

B x(x-1)2 

C (x+1)2 (x-1)2 

D (x+1)(x-1)

Solution

Correct Answer: Option C

• x4 - 2x2 + 1 
= (x2)2 - 2.x2.1 + 12
= (x2 - 1)2 
= ( (x+1) (x-1) )2
= (x+1)2 (x-1)2 

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