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答案：B
解析：
Choice B is correct. The left-hand side of the equation can only be zero when one of the factors is zero.
If the first factor is zero, then x=-10000.
If the second factor is zero, then x=-10000.
These are both the same solution. So there is only 1 unique solution. This solution is also real.
The equation has 1 unique real solution.
