[数学+英文题]代数式..在线等..救命..明天要交了..

问题描述:

[数学+英文题]代数式..在线等..救命..明天要交了..
1.write down two algebraic language of 3-a(2+b).
2.write down two of algebraic expression which has 3 terms
and the sum of the cofficients of all the terms is equal 0...
麻烦写列式..eg:3-a(2+b)

3-2a-2b or -2a+(3-ab)
2x+4y-6z