12345*12346-12344*12343简便运算
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12345*12346-12344*12343简便运算12345*12346-12344*12343简便运算12345*12346-12344*12343简便运算12345*12346-12344*1
12345*12346-12344*12343简便运算
12345*12346-12344*12343
简便运算
12345*12346-12344*12343简便运算
12345*12346-12344*12343
=12345×(12345+1)-(12343+1)×12343
=12345的平方+12345-12343的平方-12343
=12345的平方-12343的平方+2
=(12345+12343)×(12345-12343)+2
=24688×2+2
=49376+2
=49378
49378
49378
设x=12343
原式=(n+2)(n+3)-n(n+1)
=n^2+5n+6-n^2-n
=4n+6
=4*12343+6
=49378
49378
12345²12344×12346=?12345²-12344×12346=?
12345²-12344*12346=
123454321/12345*12345-12346*12344=
12345*12345-12344*12346的简便计算
不是123154321除以12345*12345-12346*12344是123454321除以12345*12345-12346*12344
12345*12346-12344*12343 求简便运算
12345*12346-12344*12343简便运算
12345的平方-12344×12346-1
12345二次方-12344乘12346
12345的2次方-12344×12346=
问123454321÷(12345×12345-12346×12344)=?
比较12345分之12344和12346分之12345的大小
12345的平方减12344乘以12346等于多少
12345的平方-12344×12346~利用乘法公式计算
12345^5-12344*12346-1急啊,怎么用公式算12345^5-12344*12346-1=
12345*12348-12346*12346
12346+12345
987654321×12345-987654322×12344