Hello, I have some question in physics?

Question

Two rods of equal length L = 1.00 m form a symmetric cross. The horizontal rod has a charge of Q = 400.00 C, and the vertical rod a charge of -Q = -400.00 C. The charges on both rods are distributed uniformly along their length. Calculate the potential at the point P at a distance x = 3.00 m from one end of the horizontal rod.
Thank you !

Answer 1

Ambiguous question. What kind of symmetry? Distance x in what direction?