Question 408121
 distance between the points({{{x[1]}}};{{{y[1]}}}) and ({{{x[2]}}};{{{y[2]}}}) is  {{{d=sqrt((x[1]-x[2])^2+(y[1]-y[2])^2)}}}
Points (-3,2) and (1,0)
{{{d=sqrt((-3-1)^2+(2-0)^2)=sqrt(16+4)=sqrt(20)=sqrt(4*5)=2*sqrt(5)}}}
Answer 4. {{{2*sqrt(5)}}}