计算,(1/8+1/9+1/10+1/11)x(1/9+1/10+1/11+1/12)-(1/8+1/9+1/10+1/
已知x=根号2-1,计算x^10+2x^9-2x^8-2x^7+x^6+3x^2+5x+1的值
计算:(1x
5/18 x 1/4 x 9/10 ( 1/4 + 2/9 )x 36 7/11 x 3/8 x 4/9 简便计算哈~
计算:10x/2x-1+5/1-2x
计算x²/x-1-x-1
计算【x-1】【x²+x+1】
计算:1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)+……+1/(x+9)(x+10)
计算x-1分之1+(x-1)(x-2)分之1+(x-2)(x-3)分之1+...+(x-9)(x-10)分之1
计算1/x-3 - 6/x*x-9 - x-1/6-2x
计算:(x^2-9分之1)÷(3x+1)
因式分解计算(x的平方-1/9)/(3x-1)
(x/x2-9)-(1/x2+6x+9)计算