x-2/0.2-x+1/0.5=3 x=?
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x-2/0.2-x+1/0.5=3 x=?
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
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002
1-0.5x/0.3-2/3x=0.3x/0.2x+1
化简(2x-5)(3x+2)-6(x+1)(x-2),其中x=0.2
(X-4)(x-2)-2(X-1)(X+3)其中X=-0.5
(X+4)/0.2-(X-3)/0.5=0.2 x-(x-1)/6=3-(x+2)/3 x/12-(2x-1)/20={
(1)3x(x+0.2)=4x(x-1.1)
f(x-1)=x^2-2x+3(x
(x+3)×(x+2)×(x+1)×x=3024