在括号内填上适当的项:(a+b–c)(a–b+c)=[a+( )][a–( )]

2025-03-07 04:53:54
推荐回答(2个)
回答1:

都填(b-c)

回答2:

(a+b–c)(a–b+c)=[a+(b-c )][a–(b-c )]