Total electric potential energy of equilateral triangle

[Herjap]

Three charged objects, (+4 micro coulomb, -4 micro
coulomb and +2 micro coulomb) are placed at the corners of an equilateral triangle with side length 2m.

Calculate the total electric potential energy of the system...

Guys Can you help me achieve a solution to this question? Thanks In Advance!

 

[gneill]

I see that this thread has been moved here to the Homework section, hence no formatting template. In future please remember that homework and homework-like questions should be posted in the Homework areas of Physics Forums.

Yes, we can help you, but you'll have to show some effort first.

What formula(s) pertain to electric potential energy? What information from the problem statement is important?