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Find values for x, y, and z that give a rational number for the square root of (x2 + y2 + z2 + 56)

Algebra
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The 2s in the above expression are supposed to be exponents.

Aug 29th, 2014

x2 + y2 + z2  = 56

It can be any one of the six combinations involving 2,4,6

(2,4,6), (2,6,4),(4,2,6),(4,6,2),(6,2,4) and (6,4,2)

Aug 29th, 2014

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