199又2/3*200又1/3
来源：学生学帮网 编辑：学帮网 时间：2024/06/16 17:49:23
199又2/3*200又1/3
(200-1/3)(200+1/3)
= 200² - (1/3)²
= 40000 - 1/9
199又2/3*200又1/3
=(200-1/3)*(200+1/3)
=200²-(1/3)²
=40000-1/9
=39999又8/9
199又2/3*200又1/3
(200-1/3)(200+1/3)
= 200² - (1/3)²
= 40000 - 1/9
199又2/3*200又1/3
=(200-1/3)*(200+1/3)
=200²-(1/3)²
=40000-1/9
=39999又8/9