Câu hỏi của do binh duc

Question

Tính nhanh

2004x2006-2003 / 2005x2005-2004

Mira - Mai · Accepted Answer

$2004$x$2006-\frac{2003}{2005}$x$2005-2004$

$=2004$x$2006-\frac{2003}{2005}$x$\frac{2005}{1}-2004$

$=2004$x$2006-2003-2004$

$=2006-2003$

$=3$

Câu trả lời:

$2004$x$2006-\frac{2003}{2005}$x$2005-2004$

$=2004$x$2006-\frac{2003}{2005}$x$\frac{2005}{1}-2004$

$=2004$x$2006-2003-2004$

$=2006-2003$

$=3$

Kudo Shinichi · Answer

2004 x 2006 - 2003 / 2005 x 2005 - 2004

= 2004 x ( 2005 + 1 ) - 2003 / ( 2004 + 1 ) x 2005 - 2004

= 2004 x 2005 + 2004 x 1 - 2003 / 2004 x 2005 + 1 x 2005 - 2004

= 2004 x 2005 + 2004 - 2003 / 2004 x 2005 + 2005 - 2004

= 2004 x 2005 + 1 / 2004 x 2005 + 1

= 1 / 1 = 1

Nếu có sai chỗ nào thì chỉ mk nha !

Hok tốt !