If \( \left(x^{2}+p x+1\right) \) is a factor of \( \left(a x^{3}+b x+c\right) \), then
(a) \( a... VIDEO
If \( \left(x^{2}+p x+1\right) \) is a factor of \( \left(a x^{3}+b x+c\right) \), then
(a) \( a^{2}+c^{2}=-a b \)
(b) \( a^{2}-c^{2}=-a b \)
(c) \( a^{2}-c^{2}=a b \)
(d) none of these
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