X-1/6X=25

解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) 25%x+(1-25%)*20%x+6=x 已知3x*x-x=1,求6x*x*x+7x*x-5x+2000 (1/6x+25):x=1: x-78%x=8.8 (1+25%)x=46 25%x/2=5 x+30%x=52 6%x-0.8%x=10.4 7.3 6/x+1=x-5/x^2+x (x+7)(x+6)-(x-2)(x+1)=? x平方-x+1=x平方-x分之6 (x+2)(x-3)(x-6)(x-1)=0 X^2+X分之6=X^2+X+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 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),