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Math Help - Problem on Limits

  1. #1
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    Problem on Limits

    Can anyone give guidance and point me in the right direction for this problem? I've tried a couple approaches that have lead to dead ends and am not sure what to do. Thanks.

    (SqRT(10x+9)-SqRT(79))/x-7

    Limit x->7
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  2. #2
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    Quote Originally Posted by JP22 View Post
    Can anyone give guidance and point me in the right direction for this problem? I've tried a couple approaches that have lead to dead ends and am not sure what to do. Thanks.

    (SqRT(10x+9)-SqRT(79))/x-7

    Limit x->7
    start by multiplying the numerator and denominator by \sqrt{10x+9} + \sqrt{79}
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  3. #3
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    I think I figured it out. Thanks.
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