12346^2-12345*12347分之24690=?
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![12346^2-12345*12347分之24690=?](/uploads/image/z/2566134-54-4.jpg?t=12346%5E2-12345%2A12347%E5%88%86%E4%B9%8B24690%3D%3F)
12346^2-12345*12347分之24690=?
12346^2-12345*12347分之24690=?
12346^2-12345*12347分之24690=?
(12346^2-12345*13247)/24690 =[12346^2-(12346-1)*(12346+1)]/24690 =(12346^2-12346^2+1)/24690 =1/24690