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All the values of ' a ' for which the qu...

All the values of `' a '` for which the quadratic expression `a x^2+(a-2)x-2` is negative for exactly two integral values of `x` may lie in (a) `[1,3/2]` (b) `[3/2,2)` (c) `[1,2)` (d) `[-1,2)`

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