[测试] 因式分解

楼主: louisophie (louisophie)   2022-12-14 11:57:38
4041=3*3*449
ab+c=2020
a+bc=2021
a(b+1)+c(b+1)=4041
(a+c)(b+1)=3*3*449
a(1-b)+c(b-1)=1
(c-a)(b-1)=1
b=2
c-a=1
a+c=3*449
2a+1=1347
2a=1346,a=673,c=674

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