1/x(x+1+1/(x+1)(x+2)+···1/(x+99)(x+100)计算
计算:(1+1/x)·x²-2x+1/x²-1;(x²/x-1-2x/1-x)÷x/x-1
2道分式计算[(x+4)(x-2)]/x³+2x²+x÷[(x-2)/x·(x+4)/(x+1)]2
计算 x(x+3)-(x-1)(x-2)
【(Xˇ2-X)/x】 ·【 x/(X+1)】+【(3x+1)】
(x)-2x·x-x-2x+1=0求x的值,
1/x(x+1+1/(x+1)(x+2)+···1/(x+99)(x+100)计算
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
计算x(x-1)分之1+(x-1)(x-2)分之1+(x-2)(x-3)分之1+...+(x-99)(x-100)分之1
(x-x²-1/1-x)·x²-2x+1/x²-x+1
计算,运用乘法公式1)2x^5·(-x)^4-(-x^4)^2·(-4x)2) (x-1/2)(x^2+1/4)(x+1
计算:2/x+x²-1/x²-2x+1·x-1/x²+x;(1/a-3+1)÷a²
计算(x+4)·(-2x)-(x+1)(x-1)+(-3x+2)(x+1); (3x-y)(y+3x)-(4x-3x)(