化简(x²+3x+9/x³-27)+(6/9-x² )-(x-1/6+2x)
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化简(x²+3x+9/x³-27)+(6/9-x² )-(x-1/6+2x)
是x的三次方-27
是x的三次方-27
![化简(x²+3x+9/x³-27)+(6/9-x² )-(x-1/6+2x)](/uploads/image/z/3221106-42-6.jpg?t=%E5%8C%96%E7%AE%80%EF%BC%88x%26%23178%3B%2B3x%2B9%2Fx%26%23179%3B-27%EF%BC%89%2B%EF%BC%886%2F9-x%26%23178%3B+%EF%BC%89-%EF%BC%88x-1%2F6%2B2x%EF%BC%89)
(x²+3x+9/x³-27)+(6/9-x² )-(x-1/6+2x)
=(x²+3x+9/(x-3)(x³+3x+9))+(6/9-x² )-(x-1/6+2x)
=1/(x-3)+(6/9-x² )-(x-1/3+x)*1/2
=(x+3-6-((x-1)(x-3)/2))/(x^2-9)
=1/2(x-3)(2-x+1)/(x^2-9)
=1/2(3-x/x+3)
=(x²+3x+9/(x-3)(x³+3x+9))+(6/9-x² )-(x-1/6+2x)
=1/(x-3)+(6/9-x² )-(x-1/3+x)*1/2
=(x+3-6-((x-1)(x-3)/2))/(x^2-9)
=1/2(x-3)(2-x+1)/(x^2-9)
=1/2(3-x/x+3)
化简 :(x²+3x+9)/(x²-27)+(6x)/(9x-x²)-(x-1)/(6+2
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