pls tell answer to marked questions
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(2x+y)³-(2x-y)³
[2x³+y³+3(2x)y (2x+y)] -[2x³-y³-3(2x)y (2x-y)].
[8x³+y³+6xy(2x+y)] -[8x³-y³-6xy (2x-y)]
8x³+y³+12x²y+6xy²-[8x³-y³-12x²y+6xy²].
8x³+y³+12x²y+6xy²-8x³+y³+12x²y-6xy².
y³+12x²y+y³+12x²y
y(y²-12x²)+y(y²+12x²)
(2x+y)³-(2x-y)³
[2x³+y³+3(2x)y (2x+y)] -[2x³-y³-3(2x)y (2x-y)].
[8x³+y³+6xy(2x+y)] -[8x³-y³-6xy (2x-y)]
8x³+y³+12x²y+6xy²-[8x³-y³-12x²y+6xy²].
8x³+y³+12x²y+6xy²-8x³+y³+12x²y-6xy².
y³+12x²y+y³+12x²y
y(y²-12x²)+y(y²+12x²)
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