(7-x)(3-x)(2-x)(2+x)-100 yin shi wen jie
2x+3x+4x+5x+x+6x+7x=100
(x^2+3x+18)/(x+14) qiu:Q(x) zhe ge deng shi de shang,yi ji R
1+x+x^2+x^3+.+x^99+x^100
1x+2x+3x+4x+5x+6x+7x…+99x=100
|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?
先化简再求值(x+3x+5x+7x+.+101x)-(2x+4x+6x+...100x),其中x=51分之2
若多项式2x*x*x*x-3x*x*x+ax*x+7x+b能被x*x+x-2整除,求a:b
x+2x-3x-4x+5x+6x-7x.-196x+197x+198x-199x-200x 等于多少
x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2)
(x+2x+3x+.100x )化简
(x-2)(x-3)/(x+5)(x-7)>0