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OpenStudy (anonymous):
find any real numbr for which rational expression is undefined a-5/7 a. none b. a=5 c. a=o d. a=-5 i got zero is that correct?
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OpenStudy (anonymous):
i think it's a, but i'm not sure at all. the only reason why i would choose none, is because "a" is never in the denominator which means there are no asymptotes, cusps or holes in the function's graph. it is simply a polynomial
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