Show all in terms of q d eo (wouldn't show up unless I scratched it out) please show work

Consider four charges arranged in a square of side length d as shown. Three of them have charge +|QI and one has charge -IQI. + 1Q a +1Q1 - 1Q1 (a): 10 points Calculate the electric potential produced by these four charges at the center of the square, in terms of 412 HowWkyAssume that the potential is zero infinitely far from the charges. Another particle with negative charge q