1/(x+2001)(x+2002)+1/(x+2002)(x+2003)+..........+1/(x+2006)(x+2007) =7/8
\(\frac{1}{\left(x+2000\right)\left(x+2001\right)}+\frac{1}{\left(x+2001\right)\left(x+2002\right)}+...+\frac{1}{\left(x+2006\right)\left(x+2007\right)}=\frac{7}{8}\)
\(\frac{X}{2000}+\frac{X+1}{2001}+\frac{X+2}{2002}+\frac{X+3}{2003}=4\)
1/(x+2000)(x+2001)+1/(2001)(x+2002)+...+1/(x+2009)(x+2010)=10/11
Tìm x biết:
\(\frac{x+4}{2000}+\frac{x+3}{2001}=\frac{x+2}{2002}+\frac{x+1}{2003}\)
\(\dfrac{x+1}{2004}+\dfrac{x+2}{2003}=\dfrac{x+3}{2002}+\dfrac{x+4}{2001}\)
giải phương trình sau:
(2-x) /2001 -1 =(1 -x) /2002 - x/2003
Giải phương trình:
a, x-1/2+x-1/4=1-2(x-1)/3.
b,2-x/2001-1=1-x/2002-x/2003
1) phân tích đa thức thành nhân tử :
a) (2x-1)^2-(4x-2)-3
b) x(x+1)(x+2)(x+3) -8
2) giải phương trình sau
\(\frac{x}{2000}+\frac{x+1}{2001}+\frac{x+2}{2002}+\frac{x+3}{2003}+\frac{x+4}{2004}=5\)