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(x+y)(x-y)(x^2+y^2)

July 26, 2018 0
left parenthesis x plus y right parenthesis left parenthesis x minus y right parenthesis left parenthesis x squared plus y squared right parenthesis u s e space left parenthesis a plus b right parenthesis left parenthesis a minus b right parenthesis equals a squared minus b squared space space.... e q u a t i o n space 1 equals left parenthesis x squared minus y squared right parenthesis left parenthesis x squared plus y squared right parenthesis equals left parenthesis x squared right parenthesis squared minus left parenthesis y squared right parenthesis squared space space space space space left square bracket a g a i n space u s e space e q u a t i o n space 1 space right square bracket equals x to the power of 4 minus y to the power of 4
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