The expression has for where are co-prime. Find .
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Divide throughout by x 2 and substitute x + x 1 = α
This will give a quadratic in α . α 2 + 2 p α − 1 = 0 Since atleast two -ve values of x must satisfy, one root of this quadratic must be less than 2.
Range of x + x 1 is (-∞,-2] ∪ [2,∞)
This will give a condition that p> 4 3 So answer will be 3 4 = 8 1