osanseviero
  • osanseviero
Limit of a function without graphics. Algebraic way :)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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osanseviero
  • osanseviero
\[\lim_{x \rightarrow -3}\frac{ x ^{3}+x ^{2}-21x-45 }{ x ^{3}+7x ^{2}+15x+9 }\]
anonymous
  • anonymous
I think you just plug in 3 for x
osanseviero
  • osanseviero
Nope, it is an idetermination. If you plug in, it is 0/0

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anonymous
  • anonymous
Ok, since the numerator and the denominator has the same degree of 3 wouldn't the limit just be 1 then?
osanseviero
  • osanseviero
Nope, there are ways in which you factorize...the thing is that I dont know how to factorize this function
shamil98
  • shamil98
Factor out the numerator and denominator.
osanseviero
  • osanseviero
Just got it, thanks :)
shamil98
  • shamil98
and simplify what you can in the numerator and denominator , and then plug in your x value

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