Physics question A +18 nC charge is located at the origin.?

What is the electric field at the position (x1,y1)=(5.0cm,0cm)? Write electric field vector in component form.
E1x, E1y =

What is the electric field at the position (x2,y2)=(−5.0cm,5.0cm)? Write electric field vector in component form.
E2x, E2y=

What is the electric field at the position (x3,y3)=(−5.0cm,−5.0cm)? Write electric field vector in component form.
E3x, E3y =