来自柴佳伟的问题
化简:3a-{-2b[a-(4a+3b)]}
化简:3a-{-2b[a-(4a+3b)]}
1回答
2020-03-26 19:06
化简:3a-{-2b[a-(4a+3b)]}
化简:3a-{-2b[a-(4a+3b)]}
3a-{-2b[a-(4a+3b)]}
=3a-{-2b[a-4a-3b]}
=3a-{-2b[-3a-3b]}
=3a-{6ab+3b²}
=3a-6ab-3b²