You have three charged particles that are initially very far apart from one another, and you must bring then together to form an equilateral triangle of side length, l. particles a and b each carry a charge -q, and particle c carries a charge 4q. how much work must you do to form the triangle? how much work must you do to rearrange the particles so that they are in a straight line with particle c in the center and a distance l between adjacent particles?