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What is the sum of all values of y for which the expression (y + 6)/(y^2 - 8y + 2) is undefined?

 Aug 23, 2021
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Any vlue of 'y' that makes the denominator will result in an 'undefined' situation

 

y^2 -8y+2 = 0

    The sum of the roots can be found by  -b/a   =   8 

 

....or you can use the quadratic formula to find roots    x = 4 +- sqrt(14)      sum = 8

 Aug 23, 2021

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