99點8的平方用完全平方怎麼計算

99點8的平方用完全平方怎麼計算


=（100）的平方-0.2的平方



計算99平方+9999
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99²；+9999
=99×99+99×101
=99×（101+99）
=19800



1*1=1 11*11=121 111*111=12321……怎麼算出來的


就是這樣計算出來發現規律的啊，
1111^1111=1234321

Elden Ring Premiere

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