作业帮9999999999×9999999999+19999999999等于多少?写出计算过程
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9999999999×9999999999+19999999999等于多少?写出计算过程
9999999999×9999999999+19999999999等于多少?写出计算过程
9999999999×9999999999+19999999999等于多少?写出计算过程
9999999999*9999999999+1999999999=9999999999^2+9999999999*2+1
=(9999999999+1)^2
=10000000000^2
=10^20
10的20次方
9999999999*9999999999+19999999999=10^20
9999999999*9999999999+1999999999=9999999999^2+9999999999*2+1
=(9999999999+1)^2
=10000000000^2
=10^20
999999999加9999999999加1111111111等于多少?呵呵呵
9+99+999+9999+99999+999999+9999999+99999999+999999999+9999999999等于多少,有简便方法吗?
9999999999＋999999999＋99999999＋99999＋9999＋999＋99＋9＝?
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