Rezolvare: (8-2)^3=8^3-3*8^2*2+3*8*2^2-2^3=
(8-2)^3=216
8^3-3*8^2+3*8*2^2-2^3=512-384+96-8=216
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Formula: (a-b)^3=a^3-3*a^2*b+3*a*b^2-b^3
Rezolvare: (8-2)^3=8^3-3*8^2*2+3*8*2^2-2^3=
(8-2)^3=216
8^3-3*8^2+3*8*2^2-2^3=512-384+96-8=216