Question Simplify the expression 2z−47z Evaluate z−227zRewrite the expression z−227zMultiply by the reciprocal 27z×z−21Multiply the terms 2(z−2)7zSolution More Steps Evaluate 2(z−2)Apply the distributive property 2z−2×2Multiply the numbers 2z−4 2z−47z Show Solution Find the excluded values z=2 Evaluate z−227zTo find the excluded values,set the denominators equal to 0 z−2=0Move the constant to the right-hand side and change its sign z=0+2Solution z=2 Show Solution Find the roots z=0 Evaluate z−227zTo find the roots of the expression,set the expression equal to 0 z−227z=0Find the domain More Steps Evaluate z−2=0Move the constant to the right side z=0+2Removing 0 doesn't change the value,so remove it from the expression z=2 z−227z=0,z=2Calculate z−227z=0Divide the terms More Steps Evaluate z−227zRewrite the expression z−227zMultiply by the reciprocal 27z×z−21Multiply the terms 2(z−2)7z 2(z−2)7z=0Cross multiply 7z=2(z−2)×0Simplify the equation 7z=0Rewrite the expression z=0Check if the solution is in the defined range z=0,z=2Solution z=0 Show Solution