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expand ((x^3 + 6x - 3) - (3x^2 + 2)\sqrt2)((x^3 + 6x - 3) + (3x^2 + 2)\sqrt2)
expand ((x^3 + 6x - 3) - (3x^2 + 2)\sqrt2)((x^3 + 6x - 3) + (3x^2 + 2)\sqrt2)
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