October 2020 0 30 Report
Rumus : a^3 + b^3 = ( a + b ) ( a^2 - ab + b^2 )
a^3 - b^3 = ( a - b ) ( a^2 + ab + b^2 )

Pertanyaan:
( a + b )^3 - 8b^3

Jawab yg bner yaa...
:)

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