a + b = 3 এবং ab = 3 হলে, a3 + b3 এর মান কত?
Solution
Correct Answer: Option A
a3 + b3 = (a + b)3 - 3 . ab (a + b)
= (3)3 - 3 . 3 . 3
= 27 - 27
= 0
= (3)3 - 3 . 3 . 3
= 27 - 27
= 0
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