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demonstrati ca:
198 se divide la expresia( 321³-123³)


Răspuns :

[tex]321^3-123^3=(321-123)(321^2+321\cdot 123+123^2)\\ 321^3-123^3=198(321^2+321\cdot 123+123^2)\\ (321^3-123^3)\vdots198[/tex]Scrie răspunsul tău aici