x-2/0.2 - x+1/0.3=5
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
化简(2x-5)(3x+2)-6(x+1)(x-2),其中x=0.2
6/x+1=x-5/x^2+x
X-5+8*X=7*X-2*X-1
关于一元一次方程的(1)0.6x+0.3=0.9x-0.2 (2)3(x-1)-7(x+5)=30(x+1)(3)(2x
求1/2x^2-1/4x+0.2x^3+0.25x-0.5x^2-1/5x^3+0.5x-1 其中x=12/13
x+3/20x=46 ,x-1/5x=40 ,x-1/2x=3/4 ,x-0.2x=18解方程
(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