Question

Tính nhanh :

\(\frac{2005\times2004-1}{2003\times2005+2004}\)

Answer 1

\(\frac{2005x2004-1}{2003x2005+2004}\)=\(\frac{4018019}{4018019}\)= 1

Answer 2

                       Bài giải

\(\frac{2005\text{ x }2004-1}{2003\text{ x }2005+2004}=\frac{2005\text{ x }2004-1}{2003\text{ x }2005+2005-1}=\frac{2005\text{ x }2004-1}{2005\text{ x }2004-1}=1\)

Answer 3

\(\frac{2005\times2004-1}{2003\times2005+2004}\)\(=\)\(\frac{2005\times\left(2003+1\right)-1}{2003\times2005+2004}\)\(=\)\(\frac{2005\times2003+2005-1}{2003\times2005+20042}\)\(=\)\(\frac{2005\times2003+2004}{2003\times2005+2004}\)\(=\)1

Answer 4

1 nha em

Answer 5

Đ/Á: 1

k cho mik nha