4322乘1233减4321乘1234怎么简算_数学解答

4322乘1233减4321乘1234怎么简算

人气：398 ℃　时间：2020-03-22 07:09:24

解答

4322×1233-4321×1234
=(4321+1)×1233-4321×(1233+1)
=4321×1233+1×1233-4321×1233-4321×1
=1233-4321
=-3088