anonymous
  • anonymous
find all numbers for which the rational expression is undefined. r^3-6r/r^2-64
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
the denominator can't be 0, so +/-8
anonymous
  • anonymous
how do you come to this conclusion? I am trying to understand the answer to this...not looking for just an answer...i have been working on it for 45 minutes..ughhh
anonymous
  • anonymous
the denominator cannot be zero

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anonymous
  • anonymous
Therefore, r^2-64 can not =0
anonymous
  • anonymous
64-64=0, positive or negative 8 squared is 64
anonymous
  • anonymous
If r were 8 or -8, you'd get a divide by zero error
anonymous
  • anonymous
ok so i am still al ittle confused as to how i would write the equation that =0
anonymous
  • anonymous
Use the \[\neq\]
anonymous
  • anonymous
You don't have to rewrite the equation. You just can't plug in 8 or -8 for r
anonymous
  • anonymous
thank you so much
anonymous
  • anonymous
NP

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