a + b=√3, a - b = √2 হলে 4ab এর মান কত ?
Solution
Correct Answer: Option D
দেয়া আছে, a + b = √3 এবং a - b = √2
আমরা জানি, 4ab = ( a + b )2 - ( a - b )2
= ( √3 )2 - ( √2 )2
= 3 - 2
= 1
আমরা জানি, 4ab = ( a + b )2 - ( a - b )2
= ( √3 )2 - ( √2 )2
= 3 - 2
= 1
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