1.(1)原式=9 (2)原式=33 (3)原式=333 (4)原式=3333
___________
√11.1-22.2=_33...3(1001个3)_____
(2002个1、1001个2
规律:---------------
√11...1-22...2 =33...3
(n个1, n/2个2 n/2个3)
2.-1.6
1.(1)原式=9 (2)原式=33 (3)原式=333 (4)原式=3333
___________
√11.1-22.2=_33...3(1001个3)_____
(2002个1、1001个2
规律:---------------
√11...1-22...2 =33...3
(n个1, n/2个2 n/2个3)
2.-1.6