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JEE Math Practice Question

The value of $$a$$ for which the sum of the squares of the roots of the equation $${x^2} - \left( {a - 2} \right)x - a - 1 = 0$$ assume the least value is :

  1. A.$$1$$
  2. B.$$0$$
  3. C.$$3$$
  4. D.$$2$$

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