doprowadź do najprostrzej postaci :
6a(⅓a²-0,5b)-12b(-0,25a+⅓b²)-ab
6a(⅓a²-0,5b)-12b(-0,25a+⅓b²)-ab =
= 2a³-3ab-(-3ab+4b³)-ab =
= 2a³-3ab+3ab-4b³-ab =
= 2a³-4b³-ab
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6a(⅓a²-0,5b)-12b(-0,25a+⅓b²)-ab =
= 2a³-3ab-(-3ab+4b³)-ab =
= 2a³-3ab+3ab-4b³-ab =
= 2a³-4b³-ab