计算 3(4x^2-3x+2)-2(1-4x^2+x)
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计算 3(4x^2-3x+2)-2(1-4x^2+x)
计算 3(4x^2-3x+2)-2(1-4x^2+x)
计算 3(4x^2-3x+2)-2(1-4x^2+x)
3(4x^2-3x+2)-2(1-4x^2+x)
=12x²-9x+6-2+8x²-2x
=20x²-11x+4
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