6.25/x+30=1/8
30X-2X=84 5.8X-X=60 6.6X-5X=8 4X-X=24 1.5X-X=1
解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1
30%x+0.5x=1/4x+8/5x=多少
x/2+x/8+x/12+x/20=1
X-5+8*X=7*X-2*X-1
解方程:1/(x*x+11x-8)+1/(x*x+-8)+1/(x*x-3x-8)=0
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
x-8/5x=15 5/1x+10/3x=120 20%x=30
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^+x^6+x^7+x^8的值
x+2/x+3-x+1/x+2=x+8/x+9-x+7/x+8