P^3 +16p = -81^2
H.C.F = p
p((p^3/p)+ (16p/p)) =-81^2
p(p^2 + 16) = -81 x -81
p(p^2 + 16) = 6561
p(p^2 + 4^2) -6561 = 0
p (p^2 + 4^2) -81^2=0
p ((p^2 + 4^2) -81^2 =0
p( p^2 +4^2 -
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