两个连续奇数的乘积是111555,这两个奇数的和是多少?要算式.

问题描述:

两个连续奇数的乘积是111555,这两个奇数的和是多少?要算式.

设这两个连续奇数是2n-1,2n+1
(2n-1)(2n+1)=4n^2-1=111555
4n^2=111556=334^2
2n=334或-334
(2n-1)+(2n+1)=4n=668或-668

333+335=668