x^-3=8 则x=

3X*X-2X+6=8,X=?3X*X-2X+6=8，X=？则代数式1.5X*X-X+1=? x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? X(x平方-6x-9)-x(x平方-8x-15)+2x(3-x)其中x=-六分之一 3x+5x=8x. 4,8-x=3x(x 8x(x-5)=3x (x+1)/(x+2)+(x+8)/(x+9)解答x+1/x+2+x+8/x+9=x+2/x+3+x+7/x+8 x^-3=8 则x= x^4-5x^3+8x^2-5x+1=0,则1/x+x= X+0.5X=3 X-0.8X=8 设x²-x=-1,则3x^4-5x³+8x²-5x+1等于? 8x+3(x-2)=5x+(x-3) 3.268=3X()+2X()+6X()+8X() x+x-=3则x+x-等于 解方程】(x+8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)(x+8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3) 解方程】(x+8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)(x+8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3) 初二分式方程x+3/x+4+x+8/x+9=x+4/x+5+x+7/x+8解(x+3/x+4)+(x+8/x+9)=(x+4/x+5)+(x+7/x+8)