化簡
1.(9a-8y)+(2a+3b)
2.(3x2)+(2x-3)
3.(4a-7b)+(11a-13b)
4.(x2次方-3x)+(12x-3)
5.(9x-2y)+(x+9y)
有數學唔識做？？
2007-10-31 2:31 am
回答 (2)
2007-10-31 2:37 am
✔ 最佳答案
1.(9a-8y)+(2a+3b)=9a-8y+2a+3b
=11a-8y+3b
2.(3x2)+(2x-3)
=6+2x-3
=2x+3
3.(4a-7b)+(11a-13b)
=4a-7b+11a-13b
=15a-20b
4.(x2次方-3x)+(12x-3)
=x2次方-3x+12x-3
=x2次方+9x-3
5.(9x-2y)+(x+9y)
=9x-2y+x+9y
=10x+7y
2007-10-31 2:43 am
1)11a2次方-8y+3b
2)6+2x-3=3+2x
3)15a2次方-21b
4)x2次方-3x+12x-3=x2次方-9x-3
5)10x-7y
應該對掛
2)6+2x-3=3+2x
3)15a2次方-21b
4)x2次方-3x+12x-3=x2次方-9x-3
5)10x-7y
應該對掛
收錄日期: 2021-04-13 19:10:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071030000051KK02667