2x²(x-1/2)

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2x²(x-1/2)2x²(x-1/2)2x²(x-1/2)2x²(x-1/2)=2x³-x²

2x²(x-1/2)
2x²(x-1/2)

2x²(x-1/2)
2x²(x-1/2)
=2x³-x²