Question 645944

exact solution:

*[invoke Distance_Formula_for_Coordinate_Plane -1, 7, 8, 4]

the answer in simplest radical form:

{{{d=sqrt((x2-x1)^2 +(y2-y1)^2)}}}

{{{d=sqrt((8-(-1))^2 +(4-7)^2)}}}

{{{d=sqrt((8+1)^2 +(-3)^2)}}}


{{{d=sqrt((9)^2 +(-3)^2)}}}

{{{d=sqrt(81 +9)}}}

{{{d=sqrt(90)}}}

{{{d=sqrt(9*10)}}}

{{{d=3*sqrt(10)}}}