1995(1996+1)-1/1996.1995+1994
1995.1996+1995-1/1996.1995+1994
1995.1996+1994/1996.1995+1994=1
\(\frac{1995.1997-1}{1996.1995+199}\)= \(\frac{1995.\left(1996+1\right)-1}{1996.1995+199}\)
= \(\frac{1995.1996+1995.1-1}{1996.1995+199}\)
= \(\frac{1995.1996+1994}{1996.1995+199}\)
làm đến đây thì mình chịu
sai đề rồi bạn ơi phải là 1995*1997-1
1996*1995+1994
1995x1997-1
1996x1995+199
1996
1996+199
1
199
1995.1997-1/1996.1995+1994
=1995.(1996+1)-1/1996.1995+1994
=1995.1996+1995-1/1995.1996+1994
=1995.1996+1994/1995.1996+1994
=1
= 1 nha tik mk may mắn cả năm ~~~~~~~~~~~~
=1995(1996+1)-1/1996.1995+1994
=1995.1996+1995-1/1996.1995+1994
=1995.1996+1994/1996.1995+1994
=1
= 1995 x (1996 + 1) -1/1996 x 1995 + 1994
= 1995 x 1996 + 1995 - 1/ 1996 x 1995 + 1994
= 1995 x 1996 + 1994/1995 x 1996 + 1994
= 1
= 1995.(1996+1)-1/1996.1995+1994
=1995.1996+1994/1996.1995+1994(chỗ này làm tắt chút)
=1
Duyệt nhé!!!!!!!!
\(\frac{1995\times1997-1}{1996\times1995+199}\)
\(=\) \(\frac{1995\times\left(1996+1\right)-1}{1996\times1995+1994}\)
\(=\) \(\frac{1995\times1996+1995-1}{1996\times1995+1994}\)
\(=\)\(\frac{1995\times1996+1994}{1996\times1995+1994}\)
\(=\) \(\frac{1\times1+1994}{1\times1+1994}\)
\(=\) \(1\)
duyệt đi
TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
tớ thấy vô lý ở tử tớ sữa lại cho nhé
tớ làm đấy
\(\frac{1995\times1997-1}{1996\times1995+1994}=\frac{1995\times\left(1996+1\right)-1}{1996\times1995+1994}=\frac{1995\times1996+\left(1995-1\right)}{1996\times1995+1994}=\)
\(\frac{1995\times1996+1994}{1996\times1995+1994}=1\)
mới đúng với thực tế nhé
1995 x 1997 - 1/1996 x 1995 + 199
=1997-1/1996+199
=1996/1996+199
=1/199
=1995 x (1996+1)-1/1996 x 1995+1994
=1995 x 1996+1995-1/1996 x 1995+1994
=1995 x 1996 +1994/1995 x 1996+1994
=1
Ta xét tử số: 1995x1997-1=1995x(1996+1)-1=1995x1996+1995-1=1995x1996+1994
Vậy gtrị của p/số trên là 1
\(\frac{1995x1997-1}{1996x1995+1994}\)
=\(\frac{1995x\left(1996+1\right)-1}{1996x1995+1994}\)
=\(\frac{1995x1996+1995-1}{1996x1995+1994}\)
=\(\frac{1995x1996+1994}{1996x1995+1994}\)
=\(1\)
