distance formula : sqrt ((x2 - x1)^2 + (y2 - y1)^2)
(-1,-2).....x1 = -1 and y1 = -2
(5,2)........x2 = 5 and y2 = 2
now we sub
d = sqrt (5 - (-1)^2 + (2 - (-2)^2)
d = sqrt (5 + 1)^2 + (2 + 2)^2)
d = sqrt (6^2 + 4^2)
d = sqrt (36 + 16)
d = sqrt 52 <==== ur answer