Question Simplify the expression 0 Evaluate zz−1Divide the terms 1−1Solution 0 Show Solution Find the excluded values z=0 Evaluate zz−1Solution z=0 Show Solution Find the roots z=0 Evaluate zz−1To find the roots of the expression,set the expression equal to 0 zz−1=0Find the domain zz−1=0,z=0Calculate zz−1=0Simplify the expression 1−1=0Subtract the terms 0=0The statement is true for any value of z z∈RCheck if the solution is in the defined range z∈R,z=0Solution z=0 Show Solution