3.2×5-2x=4.
已知方程x/x+1+x+6/x+7=x+1/x+2+x+5/x+6的解是x=-4.试求出x+62/x+63+x+68/x
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x-2/5x=3.2 x=
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)
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
2x+3x+4x+5x+x+6x+7x=100
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
6x-2x=0.72 5x+3x=3.2×2(过程仔细)
(X-3)/2+(2X-4)/3+(3X-5)/4.+(8X-10)/9=(3X-1)/2+(4X-2)/3+.(10X
5[x^2-x]=3[x^2+x]
6/x+1=x-5/x^2+x