Why is the x-component of the electric field at point P positive?

[Kasiopea]

Homework Statement

Three charges q1,q2 and q3 are placed on the vertices of an isosceles triangle ABC
respectively. As shown in the picture. Determine the electric field E
at point P and the electric potential difference

Relevant Equations

E=k*q*hatr/|r|^2

I got the answer:
E(P)=(k*Q)/(3î )−(k*Q*ĵ) /2
Can someone confirm if this is the right answer?

 

[kuruman]

The magnitudes of the components are correct but not the signs. Can you see why the x-component should be positive? The y-component is fine.