What are the excluded values for the rational expression $\frac{8}{x^{2} - 16}$ $8/(x^2-16)$ ?

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Answer 1 · 2017-12-03T01:41:04

The excluded values are 4 and -4.

Both 4 and -4, when squared equal 16, making the denominator zero and the rational expression undefined.

What are the excluded values for the rational expression 8x2−168/(x^2-16)?