化简 :(x²+3x+9)/(x²-27)+(6x)/(9x-x²)-(x-1)/(6+2x)附加几道:1、当3a²+ab-2b²=0(a≠0,b≠0),求(a/b)-(b/a)-(a²+b²)/ab的值2、[√18-4√(1/2)+1/(√2-√3)]-(
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![化简 :(x²+3x+9)/(x²-27)+(6x)/(9x-x²)-(x-1)/(6+2x)附加几道:1、当3a²+ab-2b²=0(a≠0,b≠0),求(a/b)-(b/a)-(a²+b²)/ab的值2、[√18-4√(1/2)+1/(√2-√3)]-(](/uploads/image/z/552897-9-7.jpg?t=%E5%8C%96%E7%AE%80+%EF%BC%9A%EF%BC%88x%26%23178%3B%2B3x%2B9%29%2F%28x%26%23178%3B-27%EF%BC%89%2B%EF%BC%886x%EF%BC%89%2F%EF%BC%889x-x%26%23178%3B%EF%BC%89-%EF%BC%88x-1%EF%BC%89%2F%EF%BC%886%2B2x%EF%BC%89%E9%99%84%E5%8A%A0%E5%87%A0%E9%81%93%EF%BC%9A1%E3%80%81%E5%BD%933a%26%23178%3B%2Bab-2b%26%23178%3B%3D0%EF%BC%88a%E2%89%A00%EF%BC%8Cb%E2%89%A00%EF%BC%89%EF%BC%8C%E6%B1%82%EF%BC%88a%2Fb%EF%BC%89-%EF%BC%88b%2Fa%EF%BC%89-%EF%BC%88a%26%23178%3B%2Bb%26%23178%3B%EF%BC%89%2Fab%E7%9A%84%E5%80%BC2%E3%80%81%5B%E2%88%9A18-4%E2%88%9A%281%2F2%EF%BC%89%2B1%2F%28%E2%88%9A2-%E2%88%9A3%EF%BC%89%5D-%EF%BC%88)
化简 :(x²+3x+9)/(x²-27)+(6x)/(9x-x²)-(x-1)/(6+2x)附加几道:1、当3a²+ab-2b²=0(a≠0,b≠0),求(a/b)-(b/a)-(a²+b²)/ab的值2、[√18-4√(1/2)+1/(√2-√3)]-(
化简 :(x²+3x+9)/(x²-27)+(6x)/(9x-x²)-(x-1)/(6+2x)
附加几道:
1、当3a²+ab-2b²=0(a≠0,b≠0),求(a/b)-(b/a)-(a²+b²)/ab的值
2、[√18-4√(1/2)+1/(√2-√3)]-(√3/3
都回答正确我才给分哦,并且会追加分数的!
化简 :(x²+3x+9)/(x²-27)+(6x)/(9x-x²)-(x-1)/(6+2x)附加几道:1、当3a²+ab-2b²=0(a≠0,b≠0),求(a/b)-(b/a)-(a²+b²)/ab的值2、[√18-4√(1/2)+1/(√2-√3)]-(
so easy、、提示一下,望采纳
第一题我不是不会是不晓得你有没有少东西!附加题第一个答案是二分之负一减根号十三,和二分之负一加根号十三,第二题是三分之二根号三,做完这些题我晕了,我已经高中毕业了,这些忘了!大哥,你的过程可以详细一点吗?!这是很简单的啊,最基础的,我劝你还是看看书吧,看看化简的基本公式...
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第一题我不是不会是不晓得你有没有少东西!附加题第一个答案是二分之负一减根号十三,和二分之负一加根号十三,第二题是三分之二根号三,做完这些题我晕了,我已经高中毕业了,这些忘了!
收起
(X²+3X+9/X²-27)+(6X/9X-X²)-(X-1/6+2X)
=X²+3X+9/X²-27+6/9-X²-X+1/6+2X
=9/X²-157/6