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NSolve unable to find all possible roots


Dear mathgroup,
The equation below has three possible roots, namely: 0., 1.99, -1.99.

eq = x*(Sqrt[-13.319 - x^2] + 2.41*Sqrt[1.004 - x^2])

If we try NSolve[eq == 0, x], we get {{kx-> 0.}} only.

How to instruct NSolve to search for the other two roots of the above equation?

Thank you
Luiz Melo

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