Question

For which value of x is the expression x-7/x+2 undefined?

(1) -2
(2) 2
(3) 7
(4) 0

Answer 1

A rational function is undefined when the value of the denominator is 0, so:

`x+2=0\\\therefore x=-2`

Thus, the correct answer is -2.

`\text{-B$\mathfrak{randon}$VN}`