DeterminantHard

Question

If p + q + r = 0 = a + b + c, then the value of the determinant    is

Options

A.0
B.pa + qb + rc
C.1
D.none of these

Solution

  = pqr (a3 + b3 + c3) - abc (p3 + q3 + r3) = pqr (3 abc) - abc (3 pqr) = 0

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