Question

Tính nhanh:

19001570.(20052005.2004-20042004.2005)

Answer 1

19001570.(20052005.2004-20042004.2005) 
 = 19001570.(2005.10001.2004-2004.10001.2005)
 = 19001570. 0 
 = 0

Answer 2

= 19001570.(10001.2005.2004-10001.2004-2005)

=19001570.0

=0

Answer 3

\(19001570\cdot\left(20052005\cdot2004-20042004\cdot2005\right)\)

\(=19001570\cdot\left(2005\cdot10001\cdot2004-2004\cdot10001\cdot2005\right)\)

\(=19001570\cdot0\)

\(=0\)

Answer 4

19001570.(20052005.2004-20042004.2005

=19001570.(2005.10001.2004-2004.10001.2005)

=19001570.0

=0