2x(2x+5)=(x-1)(2x+5)怎样算?
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
2x(2x+5)=(x-1)(2x+5)怎样算?
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
小数奥数网xx(x +1)x(x+ 2)x(x +3)=360怎样算?
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
x/(x-2)+(x+9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6)怎样解这道方程
6/x+1=x-5/x^2+x
X-5+8*X=7*X-2*X-1
(2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1
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