2X+2/3X=14,X=?

(x^3)^()*x^2=x^14 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 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550 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-2)=2x/(x-3)+(1-x)/(x-5x+6) 2x+3x+4x+5x+x+6x+7x=100 x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002 2x+(14-x)=x+14 x+x/3+2x=200 将式子3x+(2x-x)=3x+2x-x,3x-(2x-x)=3x-2x+x 5x+2=-8 x=30 3x=5x-14 x