lfequations (a + 2)x^2 + bx + c = 0& 2x^...

lfequations `(a + 2)x^2 + bx + c = 0`& `2x^2 + 3x + 4=0` have a common root where `a, b, c in N`, then- (A) `b^2 -4ac lt 0` (B) minimum value of a +b+ c is 16 (C) `b^2 gt 4ac+8c` (D) minimum value of `a + b + c = 7` lf one ofthe roots of `x^2-bx + c = 0`; `b, c in Q`

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