#"you can solve with two different ways"#

#"1)"#

#"find the potential energy of system for both situation:"#

#E_p=(k*q_1*q_2)/d#

#E_(p1)=(k*(-1)*6)/sqrt(5^2+1^2)" " E_(p1)=-(6k)/sqrt26#

#E_(p2)=(k*6)/sqrt(2^2+4^2) " "E_(p2)=(6k)/sqrt 20#

#"Find work doing:"#

#W=Delta E_p= E_(p2)+E_(p1)#

#W=Delta E_p=6k(-1/sqrt 20 +1/sqrt 26)#

#"2)"#

#"find the potential of both points created by a charge of -1C:"#

#V=k*q/d#

#v_1=(-1*k)/sqrt 26" "v_2=(-1*k)/sqrt 20#

#"now,find the work :"#

#Delta W=q(V_2-V_1)#

#Delta W=6k(-1/sqrt 20+1/sqrt26)#