হলে, এর মান কত?
Created: 4 years ago |
Updated: 2 months ago
best des
প্রশ্ন: a = √3 + √2 হলে, a^3 + 3a + 3a^ - 1 + a^ - 3
উত্তর: দেওয়া আছে, a = √3 + √2
সুতরাং, 1/a = √3 - √2
তাহলে, a + 1/a = √3 + √2 + √3 - √2 = 2√3
প্রদত্ত রাশি = a^3 + 3a - 3a^ - 1 + a^ - 3 = a^3 + 3 . a^2 . 1/a + 3 . a. 1/a^2 + 1/a^3 = ( a + 1/a )^3 = ( 2√3 )^3 = 24√3
Md Azizur Rahman
Founder of Satt
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