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what are the real roots of x^3+8=0 what are the real roots of x^3+8=0 @Mathematics
8 years ago
"Sum of cubes" http://www.purplemath.com/modules/specfact2.htm Or "what number, when you cube it, equals NEGATIVE eight"? :)
8 years ago
-2
8 years ago
That's it?
8 years ago
The other two solutions are complex. The functions only crosses at x=-2
8 years ago
Bleep, yup, that's it. :)
8 years ago
Great, thanks
8 years ago
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