Warning, solutions may have been lost

Hi everyone.

I have a problem with Maple 15. I have an equation, but when i write in into Maple, it says: "Warning, solutions may have been found". I don't know what to do. I've tried to solve it on paper, but without any luck. Could someone please help me?

Equation: ((x+1)²/3) - ((x+2)(x-2)/2) = ((x+3)/2) - ((x-2)²)/6) 

or when i copy paste from Maple...

(1/3)*(x+1)^2-(1/2)*(x+2)(x-2) = (x+3)*(1/2)-(1/6)*(x-2)^2