1;2X*+7X+3
2;3Y*-8Y+4
3;7Y*10Y+3
4;18Z*+61Z-7
5;10T*-3T-4
6;22T*-15T-13
7;1+G-6G*
<*=二次方>
更新1:
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[F4]數學(因式分解)十字相乘
2009-11-12 3:41 am
數學(因式分解)十字相乘
1;2X*+7X+3
2;3Y*-8Y+4
3;7Y*10Y+3
4;18Z*+61Z-7
5;10T*-3T-4
6;22T*-15T-13
7;1+G-6G*
<*=二次方>
1;2X*+7X+3
2;3Y*-8Y+4
3;7Y*10Y+3
4;18Z*+61Z-7
5;10T*-3T-4
6;22T*-15T-13
7;1+G-6G*
<*=二次方>
回答 (1)
2009-11-12 4:06 am
✔ 最佳答案
1.2X2+7X+3=(2X+1)(X+3)
2.3Y2-8Y+4
=(3Y-2)(Y-2)
3.7Y2+10Y+3
=(7Y+3)(Y+1)
4.18Z2+61Z-7
=(9Z-1)(2Z+7)
5.10T2-3T-4
=(5T-4)(2T+1)
6.22T2-15T-13
=(2T+1)(11T-13)
7.1+G-6G2
=(1-2G)(1+3G)
收錄日期: 2021-04-23 20:39:05
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20091111000051KK01305