zuz
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a-1 x a+1= a squared-1 Is this an established theorem or have I stumbled onto something that might get my name in the math books?
No.zuz said:a-1 x a+1= a squared-1 Is this an established theorem or have I stumbled onto something that might get my name in the math books?
To which question? Or to both?pinball1970 said:No.
Google difference of squareszuz said:a-1 x a+1= a squared-1 Is this an established theorem or have I stumbled onto something that might get my name in the math books?
Yesberkeman said:To which question? Or to both?![]()
Well-established is correct. It is one of the most important basic formulas that is used in many places. Whenever you see one of the terms ##a+1\, , \,a-1\, , \,a^2-1## or similar ##a+b\, , \,a-b\, , \,a^2-b^2## then you should think about it. I would estimate that you are roundabout 5,000 years late for the textbooks.zuz said:a-1 x a+1= a squared-1 Is this an established theorem or have I stumbled onto something that might get my name in the math books?
Ok. High school education and you have been messing about with multiplying brackets?zuz said:a-1 x a+1= a squared-1 Is this an established theorem or have I stumbled onto something that might get my name in the math books?
Thank you for a reply that is straight forward. But I think 5000 years is stretching it.fresh_42 said:Well-established is correct. It is one of the most important basic formulas that is used in many places. Whenever you see one of the terms ##a+1\, , \,a-1\, , \,a^2-1## or similar ##a+b\, , \,a-b\, , \,a^2-b^2## then you should think about it. I would estimate that you are roundabout 5,000 years late for the textbooks.
Maybe a little bit. The Babylonians knew Pythagoras' theorem about 3,800 years ago.zuz said:Thank you for a reply that is straight forward. But I think 5000 years is stretching it.