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x-1x=4 4 হলে, প্রমাণ করুন যে, x4+1x4=322.

Created: 2 years ago | Updated: 1 year ago
Updated: 1 year ago
Answer :

দেওয়া আছে, x-1x=4

বামপক্ষ =x4+1x4

=(x2)2+(1x2)2

=(x2+1x2)2-2.x2.1x2

=(x2+1x2)2-2

={(x-1x)2+2.x.1x2}2-2

= ( 42 + 2 )2 - 2 

= ( 16 + 2 )2 - 2 

= ( 18 )2 - 2

= 324 - 2

= ডানপক্ষ 

অতএব, x4+1x4=322 (প্রমাণিত) 

 

2 years ago

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