If \( abcd \) and \( K0 \), then the quadratic equation \( (x-a)(x-...

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If \( abcd \) and \( K0 \), then the quadratic equation \( (x-a)(x-c)+k(x-b)(x-d)=0 \) has
P
(a) All roots real and distinct
W.
(b) All roots real but not necessarily distinct
(c) All root real and negative
(d) May be imaginary
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