Question Simplify the expression z1 Evaluate z×z21Cancel out the common factor z 1×z1Solution z1 Show Solution Find the excluded values z=0 Evaluate z×z21To find the excluded values,set the denominators equal to 0 z2=0Solution z=0 Show Solution Find the roots z∈∅ Evaluate z×z21To find the roots of the expression,set the expression equal to 0 z×z21=0The only way a power can not be 0 is when the base not equals 0 z×z21=0,z=0Calculate z×z21=0Multiply the terms More Steps Multiply the terms z×z21Cancel out the common factor z 1×z1Multiply the terms z1 z1=0Cross multiply 1=z×0Simplify the equation 1=0Solution z∈∅ Show Solution