Mathematics
Junior High
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我真的是數學白癡 求大佬教我這三題(´ . .̫ . `)
6. 若a-b=8,ab=18,則²+b²=
76X77 73
7.計算 75 75
8.若456.52=456²+A,則A=
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北七我以為我打錯,a²-2ab+b²=64,然後你的移項後變號呢??