(Q14)Ramu also writes the distance formulas AB= √((x1 - x2)2 + (y1 - y2)2) why?.

Solution :

(x1 - x2)2 is same as (x2 - x1)2 and (y1 - y2)2 is same as (y2 - y1)2

i.e. =√( (x2 - x1)2 + (y2 - y1)2)

= √( (x1 - x2)2 + (y1 - y2)2)