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401* 45+ 55* 401= 401*( 45+55) = 401* 100=40100
2005* 2006-2001*2005= 2005*(2006-2001) = 2005* 5= 10025
401*45+55*401
=401*(45+55)
=401*100
=40100
2005*2006-2001*2005
=2005*(2006-2001)
=2005*5
=10025
\(\frac{1999}{2004}+\frac{2001}{2005}+\frac{5}{2004}+\frac{4}{2005}\)
=\(\left(\frac{1999}{2004}+\frac{5}{2004}\right)+\left(\frac{2001}{2005}+\frac{4}{2005}\right)\)
=\(1+1\)
=2
\(\frac{1999}{2004}+\frac{2001}{2005}+\frac{5}{2004}+\frac{4}{2005}\) = \(\frac{1999}{2004}+\frac{5}{2004}+\frac{2001}{2005}+\frac{4}{2005}\)
= \(1+1\)
= \(2\)
Click mik nha !!!!!!!!!!!!!!!!!!!
\(=\frac{2001.\left(2000+2\right)+1000}{2001.\left(2000+3\right)-1001}\)
\(=\frac{2001.2000+2001.2+1000}{2001.2000+2001.3-1001}\)
\(=\frac{2001.2+1000}{2001.3-1001}\)
\(=\frac{2001.2+1000}{2001.2+2001-1001}\)
\(=\frac{2001.2+1000}{2001.2+1000}\)
\(=1\)
2001 x 2002 + 1000 / 2001 x 2003 - 1001 = 2001 x 2002 + 1000 / 2001 x (2002 + 1) - 1001 = 2001 x 2002 + 1000 / 2001 x 2002 + 2001 - 1001 = 1000 / 2001 - 1001 = 1000 / 1000 = 1
2001 x 2002 + 2003 x 21 1981 = 84128065
2002 x 2003 - 2001 x 2002 = 8024026010
. là x á nha
=\(\frac{2006}{2008}.\frac{2001}{2004}.\frac{2008}{2002}.\frac{2004}{2006}.\frac{1001}{2001}\)
=\(\frac{2006.2001.2008.2004.1001}{2008.2004.2002.2006.2001}\)
=\(\frac{1001}{2002}\)
= \(\frac{2006\cdot2001\cdot2008\cdot2004\cdot1001}{2008\cdot2004\cdot2002\cdot2006\cdot2001}\)
= \(\frac{1\cdot1\cdot1\cdot1\cdot1001}{1\cdot1\cdot2002\cdot1\cdot1}\)
= \(\frac{1}{2}\)
\(\frac{2005.2007-1}{2004+2005.2006}\)
\(=\frac{2005.2006+2005-1}{2004+2005.2006}\)
\(=\frac{2005.2006+2004}{2004+2005.2006}\)
\(=1\)
\(=\frac{2015\left(2006+1\right)-1}{2004+2005.2006}=\frac{2005.2006+2005-1}{2004+2005.2006}=1\)
\(\dfrac{2001+2002\cdot2003}{2003\cdot2004-2005}\)
\(=\dfrac{2001+\left(2001+1\right)\left(2001+2\right)}{\left(2001+2\right)\cdot\left(2001+3\right)-2001-4}\)
\(=\dfrac{2001+2001^2+3\cdot2001+2}{2001^2+5\cdot2001+6-2001-4}\)
\(=\dfrac{2001^2+4\cdot2001+2}{2001^2+4\cdot2001+2}\)
=1