In Figure particle 1 of charge ?? 5.00q and particle 2 of charge + 2.00q are held

Question:

In Figure particle 1 of charge ?? 5.00q and particle 2 of charge + 2.00q are held at separation L on an x axis. If particle 3 of unknown charge q3 is to be located such that the net electrostatic force on it from particles 1 and 2 ts zero, what must be the

(a) X and

(b) Y coordinates of particle 3?