5/2+(x-1/2)和3(x-1/2)-8/5x
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5/2+(x-1/2)和3(x-1/2)-8/5x
![5/2+(x-1/2)和3(x-1/2)-8/5x](/uploads/image/z/6009163-43-3.jpg?t=5%2F2%2B%28x-1%2F2%29%E5%92%8C3%28x-1%2F2%29-8%2F5x)
干什么?
再问: 问x是几
再问: 我打错了是2/5
再答: 哦
再答:![](http://img.wesiedu.com/upload/2/7e/27ee1b8eeedc8bec2b5d6dacb8f40c92.jpg)
再问: 问x是几
再问: 我打错了是2/5
再答: 哦
再答:
![](http://img.wesiedu.com/upload/2/7e/27ee1b8eeedc8bec2b5d6dacb8f40c92.jpg)
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
(3-x)/(1-x)-(5-x)/(7-x)+(x^2-x)/(x^2-8x+7)=1
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
(X+2)/(X+1)-(X+4)/(X+3)=(X+6)/(X+5)-(X+8)/(X+7)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
解方程 x(2x-4)+3x(x-1)=5x(x-3)+8
因式分解:x^9+x^8-x^6-x^5+x^3+x^2-1