Find the value(s) for which the rational expression is undefined.
$\frac{8}{x + 9}$

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Answer

Final Answer: The rational expression is undefined when $x = - 9$ .

Steps

Step 1 ：Find the value(s) for which the rational expression is undefined. The expression is $\frac{8}{x + 9}$ .

Step 2 ：To find the value for which the expression is undefined, we need to solve the equation $x + 9 = 0$ .

Step 3 ：Subtract 9 from both sides of the equation to isolate x.

Step 4 ：The solution to the equation $x + 9 = 0$ is $x = - 9$ .

Step 5 ：This means that the rational expression is undefined when $x = - 9$ .

Step 6 ：Final Answer: The rational expression is undefined when $x = - 9$ .