a+b=3 এবং ab = 3 হলে a3 + b3 -এর মান কত ?
A 0
B 1
C 2
D 3
Correct Answer: Option A
a3 +b3 = (a+b)3 - 3ab(a+b)
= 33 - 3.3.3
= 27 - 27 = 0
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