math 問題

2008-09-10 6:12 am
9^X+1-2(3^2X+1)-243= 0
點做@@? help~~

回答 (2)

2008-09-10 9:10 am
✔ 最佳答案
The answer is shown as follows:

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2008-09-10 6:56 am
想問o個問題是:

9^(x+1) - 2[3^(2x+1)] - 243 = 0

或是

9^x + 1 - 2[3^(2x+1)] - 243 = 0

或是

其他呢???? 可以比清楚些ma?


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