true or false??????????????
1. 3a and 4a*4a*4a are like terms.
2. -3b and 7b are unlike terms.
3. there are 3 variables in the algebraic expression of 2a-b+c
4. in the algebraic expression of 4x-5y-1 ,the constant term is 1.
5. the algebraic expression of -3x*-3x*-3x+4y cannot be simplified
maths
2007-09-02 5:21 am
回答 (1)
2007-09-02 5:29 am
✔ 最佳答案
a is not b b is not c
c is not a......
so, they are different variables
a & a*a are unlike terms but a & 5a & 6a & -9a & -1000000a & ...... are like terms.
1, -1, 2, -2, .... all of them are called constant term
-3x*-3x*-3x+4y cannot be simplified
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