Please help

Charge q1 = q is located at position (0, 0'). Charge (12 = 2q1 is located at position ((1,0). Charge 45 = 5q1 is located at position (2d, 2d). Determine the net electric eld Em at the origin in terms of the given quantities and physical constants, including the permittivity of free space 80. Express the electric eld using ij unit vector notation. Enter precise fractions and roots rather than entering their approximate numerical values