Формула куба разности :
(a – b)³ = a³ – 3a² b + 3ab² – b³
[tex]\displaystyle\bf\\(a-4)^{3} =a^{3} -3\cdot a^{2} \cdot 4+3\cdot a \cdot 4^{2} -4^{3} =a^{3} -12a^{2} +48a-64[/tex]
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Формула куба разности :
(a – b)³ = a³ – 3a² b + 3ab² – b³
[tex]\displaystyle\bf\\(a-4)^{3} =a^{3} -3\cdot a^{2} \cdot 4+3\cdot a \cdot 4^{2} -4^{3} =a^{3} -12a^{2} +48a-64[/tex]