Question

Questionis undefined. If there's more than one value, list them9a - 11Determine the value(s) for which the rational expression-a - 9separated by a comma, e.g. a = 2,3.h

Answer 1

The rational expression is

`(9a-11)/(-a-9)`

The values of a which make the rational expression undefined are the values that make the denominator = 0

Then to find them equate the denominator by 0

The denominator is (-a - 9)

`-a-9=0`

Add 9 to each side

`\begin{gathered} -a-9+9=0+9 \\ -a=9 \end{gathered}`

Divide each side by -1

`\begin{gathered} (-a)/(-1)=(9)/(-1) \\ a=-9 \end{gathered}`

The value of a which makes the rational expression undefined is -9

The answer is a = -9