Evaluating Limits at Infinity of Rational Functions with Square Roots (Example)

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Thank you! Finally, someone that can explain this! Thanks for the short cut at the end!

zulemagutierrez
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Thank you so much, I was driven insane to know the trick 😂

HashP
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Thank you! Thanks for providing both methods, super helpful.

amykrebbers
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I was using Photomath and it did this thing where it factored x from a sqrt(x^2 +5) and the x was negative and I was so confused why that was. I asked my teacher about it and he gave me the shortcut version in the end so I was still confused. Even after seeing the explanation in the video I’m still somewhat confused but At least it makes some sense now thanks!

brxyann
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Great video but I have a question, why dont we divide by -ve x in the denominator too ?

ishasharma
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Hmmm. Is this problem solvable using L'Hopital's rule?

tomvitale
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Thank u fucking much! Btw, u have an awesome accent!

y_p
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r u sure because ive solve it in other way and it equals (square root 3 any way thanks

nourhoudanour