A positive point charge Q1 = 2.5 X 10-5 C is fixed at the origin of coordinates,

Question:

A positive point charge Q1 = 2.5 X 10-5 C is fixed at the origin of coordinates, and a negative charge Q2 = – 5.0 X 10-6C is fixed to the x axis at x = + 2.0m. Find the location of the place(s) along the x axis where the electric field due to these two charges is zero.