Name your expressions and end them with a semicolon ( ; ), so that naming assignment doesn't display. Then display the named expression with TraditionalForm. Like so;
expr = a^(4/5) - a^(3/5) b^(1/5) + a^(2/5) b^(2/5) - a^(1/5) b^(3/5) + b^(4/5);
expr // TraditionalForm
Taking Michael E2's comment as pointing out that my 1st solution isn't good ...