计算:12345432112345×12345?12346×12344

发布时间:2021-03-05 00:51:31

计算:12345432112345×12345?12346×12344

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原式=12345432112345
======以下答案可供参考======
供参考答案1:
123454321÷(12345×12345-12346×12344)=123454321÷{12345×12345-(12345+1)×(12345-1)}=123454321÷(12345×12345-12345×12345+1×1)=123454321 (用到平方差公式)
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