Question

What is the value of the rational expression x/x2-9 when x = –3?

Answer 1

Answer:

undefined

Step-by-step explanation:

the value of the rational expression x/x2-9 when x = –3

Rational expression is $\frac{x}{x^2-9}$

To find the value of the rational expression at x=-3 , we plug in -3 for x

$\frac{x}{x^2-9}$

$\frac{-3}{(-3)^2-9}$

$\frac{-3}{9-9}$

$\frac{-3}{0}$

When the denominator becomes 0 then the expression is undefined

Answer 2

You're answer is D.
-3/-3(2)-9
1(2)-9
2-9
7
so it is D