根号下11.{2n个1}..11-22..{n个2}.22=?
问题描述:
根号下11.{2n个1}..11-22..{n个2}.22=?
答
√(11-2)
=√9=3
√(1111-22)
=√(1089)
=33
...
√(11..11-2..2)
=3...3 (n个)