Question

For what value of x is the rational expression belowundefined?

Answer 1

Step-by-step explanation:

Concept:

For a fraction to be un defined, the value ofthe denominator must be equal to zero

The rtional expression is given below as

`(3x-12)/(9-x)=(numerator)/(denominator)`

By applying the concept, we will have that

`\begin{gathered} denominator=0 \\ 9-x=0 \\ x=9 \end{gathered}`

Hence,

The final answer is

`9`

OPTION B is the correct answer