fatay

Thank you very much ) i will not give up.You made me so happy ! Thanks for all good comments !

Thanks For answering.bravo imatfaal ! Blue89 okay.I will add my proof.Thanks! But i have a question.My teacher said "Fatih you're idiot.You don't have mathematicial ability" but i want to be a mathematician so i feel blue.what do you think i should do? My proof is ;

Actually this theorem answer this combination question: "how many squares are in The chessboard? " or in The puzzle newspaper thanks For answering )

-------------------------------------------------------------------------------- Hi i'm Fatih AYDIN from Turkey.I'm High School student and this is my kombination theorem about number of square (in attachment) ; Thanks For your time , all mathematicians !