Let [t] denote the greatest integer $ \le $ t. Then the equation in x, [x]2 + 2[x+2] - 7 = 0 has :

Question

Let [t] denote the greatest integer $ \le $ t. Then the equation in x,
[x]² + 2[x+2] - 7 = 0 has :

no integral solution.

exactly two solutions.

exactly four integral solutions.

infinitely many solutions.

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