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What is the sum of all values of $y$ for which the expression $\frac{y+6}{y^2-5y+4}$ is undefined?

 Feb 15, 2021
 #1
avatar+944 
+1

Factor the expression: \(\frac{y+6}{(y-1)(y-4)}\)

 

The asymptotes are at y = 1 and y = 4, so the sum is 5.

 Feb 20, 2021

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