(x+2)/(x) is a rational expression. Its domain is all real numbers except square

To determine the domain of the rational expression , we need to identify the values of that make the denominator zero, since division by zero is undefined.The denominator of the expression is . We set the denominator equal to zero and solve for : Therefore, the rational expression is undefined when .Thus, the domain of the rational expression is all real numbers except .So, the answer is: