You can put this solution on YOUR website! HOW TO SOLVE A RATIONAL EXPRESSION THAT IS NOT DEFINED?
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Not defined means not defined.
Such a rational expression would be 3/0
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If you assume 3/0 = x
Then x*0 = 3
But there is no number that can multiply zero and get 3.
That is why 3/0 is undefined.
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Cheers,
Stan H.