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Littlebird

  • one year ago

lim as x approaches 2 of (sqrt(27-x)-5)/(sqrt(3-x)-1)

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  1. misty1212
    • one year ago
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    HI!!

  2. misty1212
    • one year ago
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    do you get \[\frac{0}{0}\] when you plug in 2 for \(x\)?

  3. Littlebird
    • one year ago
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    Yes

  4. misty1212
    • one year ago
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    yeah i guess you do too bad

  5. misty1212
    • one year ago
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    you have to rationalize BOTH

  6. misty1212
    • one year ago
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    i.e. multiply top and bottom by \[(\sqrt{27-x}+5)(\sqrt{3-x}+1)\]

  7. misty1212
    • one year ago
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    leave everything that does not get rationalized in factored form, don't multiply out

  8. misty1212
    • one year ago
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    clear what i mean, or no?

  9. Littlebird
    • one year ago
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    yes i understand

  10. misty1212
    • one year ago
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    ok the stuff that rationalizes should cancel nicely then plug in 1 remember, do not multiply the other stuff out just leave it

  11. Littlebird
    • one year ago
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    wow I just stared at it and realized what you were talking about. Thanks! :)

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