3x+2>2x-2 8x-2≤7x+3 3(x-1)<2(x+9) 2(4x+3)≤3(2x+5) 5x-3≥2x 2(
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
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
(x+2/x+1)-(x+4/x+3)-(x+3/x+2)+(x+5/x+4)
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
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),
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
化简 x(x-1)+2x(x+1)-3x(2x-5)