`a^2`+`b^2`+`c^2`= `a^2`-`b^2`+`c^2`= `a^2`+`b^2`-`c^2`= `a^2`-`b^2`-`c^2`= `(a+b+c)^3`= `(a-b+c)^3`= `(a+b-c)^3`= `(a-b-c)^3`= `a^3`+`b^3`+`c^3`= `a^3`-`b^3`+`c^3`= `a^3`+`b^3`-`c^3`= `a^3`-`b^3`-`c^3`=

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