2/x+2/(x+3)+(x-2)/(x+3)=1怎么算
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
(X-3)/(X^2-4)*(X^2-4X+4)/(x^2-x-6)-1/(x+2)怎么算?
7x-3(2/3x+1/5x)-(x+2/5x)+2x,=5x怎么求出
X-40%X+1200=2/3X怎么算
y+(1+x)(2+x)(3+x)导数怎么算,
2/(X-2)+X/(X+3)=1 怎么解
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2)
x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002
(2x+1)²-(x+3)(3-x)=6x怎么简便算?
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值