x(x-1)-(x-1/3)(x+1/3)=?3Q
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x(x-1)-(x-1/3)(x+1/3)=?3Qx(x-1)-(x-1/3)(x+1/3)=?3Qx(x-1)-(x-1/3)(x+1/3)=?3Qx(x-1)-(x-1/3)(x+1/3)=x^2
x(x-1)-(x-1/3)(x+1/3)=?3Q
x(x-1)-(x-1/3)(x+1/3)=?3Q
x(x-1)-(x-1/3)(x+1/3)=?3Q
x(x-1)-(x-1/3)(x+1/3) =x^2-x-x^2+1/9 =-x+1/9
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/X-3/-/X-1/
(3x/x-1)
x-3(x-1)
| X+1 |>| X-3 |
x+3/x-1
(x +1)(x-3)
(x+3)(x-1)
|x+1|-|x-3|
(x+1)(x-3)
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
[x（x+1）+x平方（x-1)]+（-3x)
x{x+1}{x-1}}x-2}{x-3}-40
x^5-x^4+x^3-x^2+x-1
|x+1|-|x|+|x-2|-|-x+3|已知x+2
(X+1)X(X+2)X(X+3)=504