> in Mathematica4.1 and Mathematica 5. > > Why??? I've tried to run : Timing[NSolve[x^802 + 4x^403 + 2x^2 - 3 == 0, x, 4]] but after 5 minutes no result found so i stopped it. What are your times on Mathematica 5.0 and 4.1? Then i run these:

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