因式分解:(a+b-c)(a-b+c)+(b-a+c)∠(b-a-c).

2025-01-03 17:59:47
推荐回答(1个)
回答1:

(a+b-c)(a-b+c)+(b-a+c)•(b-a-c)
=(a+b-c)(a-b+c)-(b-a+c)•(a-b+c)
=(a-b+c)[a+b-c-(b-a+c)]
=(a-b+c)(2a-2c)
=2(a-b+c)(a-c).