如题所述
第1个回答 2020-03-02
97×103
=（100-3）x103
=100x103-3x103
=10300-309
=10300-300-9
=10000-9
=9991本回答被网友采纳
=（100-3）x103
=100x103-3x103
=10300-309
=10300-300-9
=10000-9
=9991本回答被网友采纳
第2个回答 2023-03-11
97×103
=(100-3)(100+3)
=100²-3²
=10000-9
=9991本回答被网友采纳
=(100-3)(100+3)
=100²-3²
=10000-9
=9991本回答被网友采纳
