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Multiple choice

If large root of the equation ${ (2015x) }^{ 2 }-(2014)(2016)x-1=0$ is $\alpha $ and smaller root of equation ${ x }^{ 2 }+2014x-2015=0$ is $\beta $, then value of $\dfrac { \sqrt { \alpha -\beta } }{ 224 } $ is -

  1. 2

  2. 0

  3. 3

  4. 4

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