SOLUTION: Which numbers cannot be used in place of the variable in each rational expression? a^2 - b^2/ a - b

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Question 179462: Which numbers cannot be used in place of the variable in each
rational expression? a^2 - b^2/ a - b
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Which numbers cannot be used in place of the variable in each
rational expression? a^2 - b^2/ a - b
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a cannot be b.
If a were to equal b you would get 0/0 which is undefined.
Cheers,
Stan H.