yer i got it out. it took me a bit of writing. wat i did was first start with (7-x)^2 + (2-y)^2 = (2-x)^2 + (3-y)^2, then u equate them and u end up with y= something, sori i dont have my book. so thts ur first equation. then u do (7-x)^2 + (2-y)^2 = (-4-x)^2 + (-1-y)^2, and u equate that and u...