求解 1/X(X+3)+1/(X+5)(X+6)+……+1/(X+99)(X+100)
1x+2x+3x+4x+5x+6x+7x…+99x=100
1X+2X+3X…+98X+99X+100X=50500X X等于多少?
解方程:2x+4x+6x...+100x=1-(x+3x+5x+...+99x)
1+x+x^2+x^3+.+x^99+x^100
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
求解方程(x-1)/(x²-5x+6)+(x-2)/(x²-4x+3)=(x-3)/(x²
有几道题求解,|x²-3x|>4,|x/1+x|>x/1+x
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
请问1+x+2x+3x…99x+100x等于多少.
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000
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