Question Factor the expression 2(2z−251) Evaluate 4z−502Solution 2(2z−251) Show Solution Find the roots z=2251Alternative Form z=125.5 Evaluate 4z−502To find the roots of the expression,set the expression equal to 0 4z−502=0Move the constant to the right-hand side and change its sign 4z=0+502Removing 0 doesn't change the value,so remove it from the expression 4z=502Divide both sides 44z=4502Divide the numbers z=4502Solution z=2251Alternative Form z=125.5 Show Solution