Question 117746
{{{D}}}({{{-1}}},{{{-2}}}), {{{E}}}({{{-3}}},{{{-4}}})

The distance (denoted by {{{d}}}) between two points in two dimensions is given by the following formula:

{{{d = sqrt((x[1]-x[2])^2 + ( y[1]-y[2]))^2)}}} 



Thus in our case, the required distance is


{{{d = sqrt((-1-(-3))^2 + (-2-(-4)))^2)}}} 

{{{d = sqrt((-1+3)^2 + (-2+4))^2)}}} 

{{{d = sqrt(2^2 + 2^2)}}} 

{{{d = sqrt(8)}}} 

{{{d = 2.2828427125}}}