What are the excluded values for $(k^2-4)/(k^2+5k-24)$ ?

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Answer 1 · 2017-03-14T17:51:44

$k= -8, and k =3$

The denominator is a quadratic expression which can be factorised as $(k+8)(k-3)$ .

At $k= -8 and k=3$ one of the the factors would be equal to zero which would make the given rational expression undefined.

Hence these two are the excluded values.

What are the excluded values for (k^2-4)/(k^2+5k-24)(k^2-4)/(k^2+5k-24)?