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主要内容

给多项式求导

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问题

x, equals, minus, 2时,start fraction, d, divided by, d, x, end fraction, left parenthesis, minus, 2, x, start superscript, 4, end superscript, plus, 3, x, cubed, minus, x, squared, right parenthesis的值是多少?
选出正确答案:
不会做了?
不会做了?