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解方程

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longzaifei Posted at 2014-3-10 14:28:56 |Read mode

$ 7x^{2}-13x+8=2x^{2}\sqrt[3]{x(1+3x-3x^{2})} $
很容易发现有个根是 $x=1$,怎么找到其他根，或者证明没有其他根。

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其妙 Posted at 2014-3-10 20:02:59

软件，

虽然不会用。

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kuing Posted at 2014-3-10 20:34:04

回复 2# 其妙

软件发现有另一个二次因式

，手算还真不知怎么算……

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