QuestionSimplify the expressions and find excluded values: 7. $\frac{3 x-9}{x^{2}-6 x+9}$, 8. $\frac{4 x-8}{x^{2}-4 x+4}$.

Studdy Solution
olving the equation $x-2 =$ gives us the value of $x$ that must be excluded from the domain.
$$x =2$$So, the simplified expressions are $\frac{3}{x-3}$ and $\frac{4}{x-2}$, and the numbers that must be excluded from the domain are $3$ and $2$ respectively.