So when you want to translate any equation the go to way is to only affect the x and y values themselves. So when it asks to translate it to the left 6 units, we say (x + 6)^2 because at x = -6 the value is 0 which is at the center. The same thing occurs with the y so (y - 5)^2 because at y = 5 the value is 0. So the equation is (x + 6)^2 + (y - 5)^2 = 81. Hope this helps