SOLUTION: If p + q + r =1 , pq + qr + rs = -1 and pqr = -1, find the value of p^ 3 + q^ 3 + r ^3

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: If p + q + r =1 , pq + qr + rs = -1 and pqr = -1, find the value of p^ 3 + q^ 3 + r ^3      Log On