关于添括号的数学题~就一题~
问题描述:
关于添括号的数学题~就一题~
(2a-b+c)(2a+b-c)=[2a-( )][2a+( )]
答
(2a-b+c)(2a+b-c)=[2a-(b-c)][2a+(b-c)]
关于添括号的数学题~就一题~
(2a-b+c)(2a+b-c)=[2a-( )][2a+( )]
(2a-b+c)(2a+b-c)=[2a-(b-c)][2a+(b-c)]