Question

Look at the rational expression below. x^2-4/2-x Which value of x makes the expression undefined?

Answer 1

The answer would 2, since you cannot divide anything by 0 as it would be undefined. 2 is the only number that gives you this option 

Answer 2

Answer:

given rational function is undefined for x = 2

Step-by-step explanation:

The given rational function is

$\frac{x^2-4}{2-x}$

The rational function is undefined if the denominator is zero.

Hence, the given rational function is undefined if

$2-x=0$

Solve the equation for x

$x=2$

Therefore, the given rational function is undefined for x = 2