Each of x, y and z is a rational number such that: x + y * ³√2 + z * ³√4 = 0.

Prove that x=y=z=0 is the only possible solution to the above equation.

(In reply to re(2): Solution - Extra font facility by Harry)

Harry, I had the same problem yesterday in my initial post at first, so I later edited it and used a "cubrt" function instead.  In fact I'll try out the button now and see what it looks like:

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Posted by Jim Keneipp on 2009-10-16 12:08:01