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\(\dfrac{1995\cdot\left(1995+1\right)-1000}{1995\cdot1995+995}\) = \(\dfrac{1995\cdot1995+1995-1000}{1995\cdot1995+995}\)
= \(\dfrac{1995\cdot1995+995}{1995\cdot1995+995}\) = \(1\)
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1979 x 1996 - 995/1995 x 1997 + 1994
= 1979 x ( 1996 + 1994 - 995/1995 )
= 1979 x ( 2000 - 995/1995 )
= 1979 x 1999,50125313
= kết quả
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\(\frac{1995\cdot1996-1000}{1995\cdot1995+995}=\frac{1995.1995+1995-1000}{1995.1995+995}=\frac{1995.1995+995}{1995.1995+995}=1\)
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1995 x 1990 x 1997 x 1993 x997 1 x 2 x 1 x 1 x 1
___________________________ = ______________________ = 1
1997 x 1993 x 1994 x 1995 x 995 1 x 1 x 2 x 1 x 1
Ủng hộ nhé !!! Chúc bạn học giỏi !! Vì khi nhân vào ta có thể rút gọn tử cho mẫu !
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a.
(1 + 3 + 5 + ... + 2007 + 2009 + 2011) x (125125 x 127 - 127127 x 125)
= (1 + 3 + 5 + ... + 2007 + 2009 + 2011) x 0
= 0
b.
\(\frac{2006\times125+1000}{126\times2006-1006}=\frac{2006\times125+1000}{125\times2006+1\times2006-1006}=\frac{2006\times125+1000}{125\times2006+1000}=1\)
a,
( 1+3+5+7+…+2003+2005) x (125 125 x 127 – 127 127 x 125)
= ( 1+3+5+7+…+2003+2005) x (125 x 1001 x 127 – 127 x 1001x 125)
= ( 1+3+5+7+…+2003+2005) x 0 = 0
1