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If the two equations ax^2+bx+c=0 and 2x^...

If the two equations `ax^2+bx+c=0` and `2x^2-3x+4=0` have a common root then (A) 6a=4b=-3c (B) 3a=-4b=3c (C) 6a=-4b=3c (D) none of these

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