Give the excluded value(s) for the following fraction.

y+5/y^2+4y-32

Since we can divide by 0, we can clearly see that  there  is no way denominator can be 0. So, lets start :.
The exluded  values are lying in the y and we hav eto find them :
According to the info above,
y is -8 and 4. 
That's all!

Yes, two vertical lines can be complementary