Question

the electric field has coordinate dependence as E(x,y)=x(i) + x^2(j) where i and j are the unit vectors fro x and y axis. Find the potential difference between (a) point (x,y)= (2,5) and (x,y)= (10,5) and (b) (x,y)=(2,5) and (x,y)=(2,10).