If a² + b² = 5ab, then the value of a²/b² + b²/a² is
Solution
Correct Answer: Option B
দেওয়া আছে , a² + b² = 5ab
a²/b²+b²/a²=(a⁴+b⁴)/a²/b²
=(a²)²+(b²)²/a²b²
=(a²+b²)²-2.a².b²/a²b²
={(5ab)²)-2a²b²/a²b²
=(25a²b²-2a²b²)/a²b²
=23a²b²/a²b²
=23
a²/b²+b²/a²=(a⁴+b⁴)/a²/b²
=(a²)²+(b²)²/a²b²
=(a²+b²)²-2.a².b²/a²b²
={(5ab)²)-2a²b²/a²b²
=(25a²b²-2a²b²)/a²b²
=23a²b²/a²b²
=23
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