大师作文网1.3-2x>-3 2x-3>-7 2.2x+5＞5x+2 x-1＞3x 3.7x-9≥4x-3 6x+7＜11x+12
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
1.3-2x>-3 2x-3>-7 2.2x+5＞5x+2 x-1＞3x 3.7x-9≥4x-3 6x+7＜11x+12
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
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),
（1） x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
2x+3x+4x+5x+x+6x+7x=100
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
x+2x-3x-4x+5x+6x-7x.-196x+197x+198x-199x-200x 等于多少
解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8)
1x+2x+3x+4x+5x+6x+7x…+99x=100