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Facotrise 4a^2-12a+9-49b^2

July 26, 2018 0
4 a squared minus 12 a plus 9 minus 49 b squared equals left parenthesis 4 a squared minus 12 a plus 9 right parenthesis minus 49 b squared equals left curly bracket left parenthesis 2 a right parenthesis squared minus 2.2 a.3 plus 3 squared right curly bracket minus left parenthesis 7 b right parenthesis squared space space space space space space space space left square bracket u s e space x squared plus y squared minus 2 x y equals left parenthesis x minus y right parenthesis squared right square bracket equals left parenthesis 2 a minus 3 right parenthesis squared minus left parenthesis 7 b right parenthesis squared equals left parenthesis 2 a minus 3 minus 7 b right parenthesis left parenthesis 2 a minus 3 plus 7 b right parenthesis space space space space space space space space space space space space space left square bracket b y space u sin g space left parenthesis x plus y right parenthesis left parenthesis x minus y right parenthesis equals x squared minus y squared right square bracket
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