(4x-2)(x+1)=3x+4
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
6/(x+1)=(x+5)/[x(x+1)] (3-x)/(x-4)+1/(4-x)=1 2/(1+x)-3/(1-x)
(x-1)^3(x+1)(x-2)/(x+4)
(x+1)(x+2)(x+3)(x+4)+1
先化简再求值:(x+2/x²-2x - x-1/x²-4x+4)÷ x-4/x,其中x=3/2
x(x^2-1)+2x^2 *(x+1)-3x*(2x-5)=x(3x^2-4x)-28
1、x*(x+3)*(x+6)*(x+9)=68040 2、x*(x+1)*(x+2)*(x+3)*(x+4)=5544
5x-3(2x+1)=6x-4(5-3x)求x
3X+(X+2)+(X+1)*(X-1)=4*(X²+8)