(x×x+3x+2)(x×x+7x+12)-24

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/11/07 21:46:49

(x×x+3x+2)(x×x+7x+12)-24
=(x+1)(x+2)(x+3)(x+4)-24
=(x+1)(x+4)(x+2)(x+3)-24
=(x²+5x+4)(x²+5x+6)-24
=(x²+5x)²+10(x²+5x)+24-24
=(x²+5x)²+10(x²+5x)
=(x²+5x)(x²+5x+10)
=x(x+5)(x²+5x+10)

(x×x+3x+2)(x×x+7x+12)-24 |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| (x-2)(x-3)+2(x-5)(x+6)-3(x^2-7x+12) x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550 用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+. (x |x| x ，x (x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2