Comprehension \( +9=0 \). Consider the equation \( x^{4}-\lambda x^{2} \) If the equation has 4 ...

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Comprehension \( +9=0 \).
Consider the equation \( x^{4}-\lambda x^{2} \)
If the equation has 4 real and distinct roots, then \( \lambda \) lies in the interval.
(a) \( (-\infty,-6) \cup(6, \infty) \)
(b) \( (0, \infty) \)
(c) \( (6, \infty) \)
(d) \( (-\infty,-6) \)
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