Finding the number of rational values a function can take

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Titan97 said:
what is that supposed to mean?
The question in the OP is
Titan97 said:
The number of rational values that f(a)+f(b)+f(c) can take is?
Given what you have found, why do you the answer is 3 instead of 6?
 
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0 - 3/2 - √2 is not a rational number
 
That's ok :angel: