99······9*99······9+199······9=
1个回答
99······9*99······9+199······9
=99······9*99······9+2×99······9+1
=(99……9+1)的平方
=100……0的平方(2000个0)
相关问题
99……9×99……9+199……9
99...9(2003个9)*99...9(2003个9)+199...9(2003个9)是多少?
99..9(有n个9)*99...9(有n个9)+199...9(有n个9)
99.9(n个9)乘以99.9(n个9)+199 .9(n个9)怎么算
化简:99…9×99…9+199…9 n个9×n个9+1n个9
一道初三的探索规律题,.√9×9+19=10 √99×99+199=100 √99..99(N个9)×99..99(N个
99...9(8个9)*99.9(8个9)+199...9(8个9)的末尾有几个零
19+199+1999+……+199……99(2002个9)
根号(99...9)^2+199...9 2013个9 2013个9
(99…9)^2+199…999…9 有n个9 199…9中的99…9也是有n个9计算 结果用n表示的