Răspuns :
a) 234*23+234*87-234*10=
=5382+20358-2340
=25740--2340
=23400
b) 1998*1998-1998*1997=
=3992004-3990006
=1998
c) 1996*1997-1996*1995=
=3986012- 3982020
=3992
=5382+20358-2340
=25740--2340
=23400
b) 1998*1998-1998*1997=
=3992004-3990006
=1998
c) 1996*1997-1996*1995=
=3986012- 3982020
=3992