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计算:1/(x+3)(x+4)+1/(x+4)(x+5).1/(x+99)(x+100)

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计算:1/(x+3)(x+4)+1/(x+4)(x+5).1/(x+99)(x+100)
计算:1/(x+3)(x+4)+1/(x+4)(x+5).1/(x+99)(x+100)
1/(x+3)(x+4)+1/(x+4)(x+5).1/(x+99)(x+100)
=1/(x+3)-1/(x+4)+1/(x+4)-1/(x+5)+.+1/(x+99)-1/(x+100)
=1/(x+3)-1/(x+100)
=(x+100)/[(x+3)(x+100)]-(x+3)/[(x+3)(x+100)]
=(x+100-x-3)/[(x+3)(x+100)]
=97/[(x+3)(x+100)]
计算：(x-1)(x^2-4X+3)-x(x^2-5X+2)有过程 计算（x*x+4x+5）/（x+2）-（x*x+6x+10）/（x+3）+1 1x+2x+3x+4x+5x+6x+7x…+99x=100 解方程：2x+4x+6x...+100x=1-(x+3x+5x+...+99x) 计算：(3/x)+(x/x²-1)-(4/1-x) 如何计算 (x+1)(x+2)(x+3)(x+4) 计算(X-1)(X-2)(X-3)(X-4) x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| (1-5x+5x^2-4x^3)/(x^2-x+1) 用直式计算 1+x+x^2+x^3+.+x^99+x^100