Các câu hỏi tương tự
CMĐT: 1996 x 1989 -1993 x 1998 x 1995 = 2005 x 2010 x 2003 - 2007 x 2002 x2009.
a,x-10/1994+x-8/1996+x-6/1998+x-4/2000+x-2/2002=x-2002/2+x-2000/4+x-1998/6+x-1996/8+x-1994/10
b,x-1991/9+x-1993/7+x-1995/5+x-1997/3+x-1999/1=x-9/1991+x-7/1993+x-5/1995+x-3/1997+x-1/1999
c,x-1/13-2x-13/15=3x-15/27-4x-27/29
x+1/2009+x+3/2007=x+5/2005+x+7/1993
Giai phương trình
x+1/2009 + x+3/2007 = x+5/2005 + x+7/2003
A=2001^3+2002^3+2004^3+2005^3+2006^3+2007^3+2008^3+2009^3
tính chính xác...
A=2001^3+2002^3+2004^3+2005^3+2006^3+2007^3+2008^3+2009^3
tính chính xác...
A=2001^3+2002^3+2004^3+2005^3+2006^3+2007^3+2008^3+2009^3
tính chính xác...
Giải bất phương trình sau:
\(\frac{x+1994}{2009}+\frac{x+1995}{2010}>\frac{x+1996}{2011}+\frac{x+1997}{2012}\)
\(\frac{x-5}{2009}+\frac{x-7}{2007}=\frac{x-9}{2005}+\frac{x-11}{2003}\)