Wzory skróconego mnożenia !!
( 5 + x ) do potęgi 3 - ( 5 - x) do potęgi 3 = ??
125+75x+15x²+x³-(125-75x+15x²-x³)
75x + 15x² + x³ + 75x - 15x² + x³ = 0
x = 0
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125+75x+15x²+x³-(125-75x+15x²-x³)
75x + 15x² + x³ + 75x - 15x² + x³ = 0
x = 0