If \( \alpha \) and \( \beta \) are the real roots of \( x^{2}+p x+...

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If \( \alpha \) and \( \beta \) are the real roots of \( x^{2}+p x+q=0 \) and \( \alpha^{4}, \beta^{4} \) are the roots of \( x^{2}-r x+s=0 \). Then the equation \( x^{2}-4 q x+2 q^{2}-r=0 \) has always \( (\alpha \neq \beta, p \neq 0, p, q, r, s \in R) \) :
\( \mathrm{P} \)
(a) one positive and one negative root
(b) two positive roots
W
(c) two negative roots
(d) can't say anything
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