#### Answer

The answer is below.

#### Work Step by Step

The second fraction is inverted, so both its numerator and its denominator are in the denominator at some point. Thus, the three numbers given, -1, 0, and 1, cannot ever be plugged into the equation because they would make a denominator equal to zero at some point during simplification. However, 2 would never make a denominator equal to zero (since the x-2 is never in the denominator of a fraction), so it is a valid value to insert into the equation.