20023002×20022003-20023003×20022002=?
问题描述:
20023002×20022003-20023003×20022002=?
答
20023002×20022003-20023003×20022002=(20023002+1)×20022003-20022003-20023003×2002202=20023003×20022003-20023003×2002202-20022003=20023003×(2002203-2002202)-2002203=20023003-2002203=1000...