976*1001-976
=976*1001-976*1
=976*{1001-1}
=976*1000
=976000
tich cho minh nha
976*1001-976
=976*(1000-1)
976*1000
976000
976 * 1001 - 976 * 1
= 976 * ( 1001 - 1 )
= 976 * 1000
= 976000
=976x1001-976x1
=976x(1001-1)
=976x1000
976000
976 x 1001 - 976= 976 x 1001 - 976 x 1
= 976 x (1001-1)
= 976x 1000
= 976000