(3-2-0.1x)*(200+40x)=200+24
x+x/3+2x=200
(3-x)(200+40/0.1x)-24=200
(3-2-X)(200+X/0.1X40)-24=200
x+2x-3x-4x+5x+6x-7x.-196x+197x+198x-199x-200x 等于多少
5*(x-2)=4*(x+3) 2x+(50-x)*4=140 3x-(8-x)=20*4 200x=(x-0.5)*2
化简:1/X(X+1) +1/(X+1)+(X+2) +1/(X+2)(X+3) +.+1/(X+2006)(X+200
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
解方程x(x-1)(x-2)(x-3)(x-4)=24
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
2x+3x+4x+5x+x+6x+7x=100