X^2-6X+9/X^2-X-6除以X^2-9/X^2-3X-10乘以X+3/2X-10
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
2x+4/x^2;+6x+9 除以 x+2 乘以x^2;+x-6/8-4x
计算:2x-6/4-4x+x^2除以(x+3)乘以x^2+x-6/x+3
计算:(2x-6)/(4-4x+x^2)除以(x+3)乘以(x^2+x-6)/(3-x)
4-4x+x^2分之2x-6除以(x+3)乘以3-x分之x^2+x-6
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),
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
2x分之x+2*x^2+5x+6分之x^3-3x^2除以x^2+2x-3分之x^3-9x
(1-x/3-x)平方除以x平方-6x+9/9-x平方*1/x平方-2x+1
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
先化简,再求值.x/x+1-x+3/x+1乘以2x^2+6x/x^2+6x+9,其中x=-1/2