123462-12345×12347/22=?.123462-12345×12347/22=？

123462-12345×12347/22=?.123462-12345×12347/22=？ 123462-12345×12347/22=?123462-12345×12347/22=？ 12346^2-12345*12347 12346^2-12345*12347分之24690=? 24690/12346-12345×12347 12345²-12343*12347 12347+12345×989 算计：24690/(12346^2-12345*12347)要过程啊~~~~ 12346²-12345*12347= 24690/12346²-12347*12345 12346二次方-12345*12347分之24960 12345的平方减12343乘12347 123456²-12345×12347分之24690 1993 / 12346×12346-12345×12347的简便运算 求1993/12346的二次方-12345*12347的值 2008/12346的平方-12345×12347列式计算 急啊~~~1） （x+y+z)（x-y-z) （ 2）题12345的2次方-12343乘12347求高手!谢谢大家了! 12345^2-12346^2