6x(x-2)-10=5x(x十8)
已知1十x十x^2 十x^3=0,求x十x^2十x^3十x^4+x^5十x^6+x^7十x^8的值
2x十5=17,8x-3x=6.5,6x十3x=36,
x十5十x十6…=1000
X.(X十1)x(X十2)x(x十3) =360
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
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),
5x十2x=42 15十2x一3=48 2x十3x十17=37 6x一3x=6÷5 9x一2x=1
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
(x^3十3x^2-5x十6)-(2x^2-5x十1)-(x^3十x^2-2)
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2