如题所述
2ãåå¼=125Ã(104² - 96²)=125Ã(104-96)Ã(104+96)=125Ã8Ã200=1000Ã200=2000003ãåå¼=[(2017-x) - (2016-x)]²=(2017 - x - 2016 + x)²=1²=14ãåå¼=[(2017-x) + (x-2016)]²=(2017 - x + x - 2016)²=1²=1