a+b+c=0, a3+b3+c3 এর মান কত?
a+b+c=0, a3+b3+c3 এর মান কত? Correct Answer 3abc
a + b + c = 0 → a + b = - c → (a + b)3 = - c3 → a3 + b3 + 3ab(a + b) = - c3 → a3 + b3 - 3abc = - c3 → a3 + b3 + c3 = 3abca+b+c=0, a3+b3+c3 এর মান কত? Correct Answer 3abc
a + b + c = 0 → a + b = - c → (a + b)3 = - c3 → a3 + b3 + 3ab(a + b) = - c3 → a3 + b3 - 3abc = - c3 → a3 + b3 + c3 = 3abc