1. Add (4+5n^2)+(-2-3n^2)?
回答 (4)
2009-03-13 5:25 pm
✔ 最佳答案
(4+5n^2)+(-2-3n^2)=4-2+5n^2-3n^2
=2+2n^2
:D
2009-03-13 5:26 pm
2 + 2 n ²
2009-03-13 5:26 pm
(4 + 5n^2) + (-2 - 3N^2)
= 4 + 5n^2 - 2 - 3n^2
= 5n^2 - 3n^2 + 4 - 2
= 2n^2 + 2
= 2(n^2 + 1)
= 4 + 5n^2 - 2 - 3n^2
= 5n^2 - 3n^2 + 4 - 2
= 2n^2 + 2
= 2(n^2 + 1)
2009-03-13 5:25 pm
combine like-terms
should get: 2+2n^(2)
should get: 2+2n^(2)
收錄日期: 2021-05-01 12:08:28
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https://hk.answers.yahoo.com/question/index?qid=20090313092243AAfrYDu