如题所述
第1个回答 推荐于2017-09-25
45x45+55x55
=45x45+55x(45+10)
=45x45+55x45+55x10
=45x(45+55)+550
=45x100+550
=4500+550
=5050本回答被网友采纳
=45x45+55x(45+10)
=45x45+55x45+55x10
=45x(45+55)+550
=45x100+550
=4500+550
=5050本回答被网友采纳
第2个回答 2016-05-16
45×45+55×55
=2025+3025
=5050
=2025+3025
=5050