If a, b, c, d\[\in \]R, then the equation \[({{x}^{2}}+ax-3b)\]\[({{x}^{2}}-cx+b)\]\[({{x}^{2}}-dx+2b)\]=0 has

If a, b, c, d\[\in \]R, then the equation \[({{x}^{2}}+ax-3b)\]\[({{x}

1.	If a, b, c, d\[\in \]R, then the equation \[({{x}^{2}}+ax-3b)\]\[({{x}^{2}}-cx+b)\]\[({{x}^{2}}-dx+2b)\]=0 has
A.	6 real roots
B.	at least 2 real roots
C.	4 real toots
D.	3 real roots
Answer» C. 4 real toots

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If a, b, c, d\[\in \]R, then the equation \[({{x}^{2}}+ax-3b)\]\[({{x}^{2}}-cx+b)\]\[({{x}^{2}}-dx+2b)\]=0 has

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