2×(-0.5)³-3×(-0.5)²+3×(-0.5)-|-0.5|

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2×(-0.5)³-3×(-0.5)²+3×(-0.5)-|-0.5|
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2×(-0.5)³-3×(-0.5)²+3×(-0.5)-|-0.5|
2×(-0.5)³-3×(-0.5)²+3×(-0.5)-|-0.5|

2×(-0.5)³-3×(-0.5)²+3×(-0.5)-|-0.5|
你题是不是输错了

=-1/4-3/4-1.5-0.5
=-3

-0.25-0.75-1.5-0.5=-3