3/1:(5x-1)=5/3:0.9
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000
x+3/x+1-x+5/x+3-x+7/x+5+x+9/x+7=0
(2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1
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
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
(3-x)/(1-x)-(5-x)/(7-x)+(x^2-x)/(x^2-8x+7)=1
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),
3x(7-2x)+5x(2x-1)=4x(x-3)+5
3/x-1=4/x 6/x+1=x+5/x(x+1)
解方程 3x/x×x-1+x×x-1/3x=5/2