1. 問題の内容
問題は、式 を展開し、簡略化することです。
2. 解き方の手順
まず、各項を展開します。
次に、これらの結果を元の式に代入します。
項を並べ替えて、整理します。
この式を因数分解します。
最終的に
3. 最終的な答え
0
答え:0
最終的な答えは0です。
The last step is wrong.
Let a=1, b=2, c=
3. $1(4-9) + 2(9-1) + 3(1-4) = -5 + 16 - 9 = 2$
. OK
. OK
The final answer is
0. If two of the variables are same such as a=b
Thus is 0
Thus, if two of the parameters are the same, the value of the expression is
0. Final Answer: The final answer is $\boxed{0}$
However, the above factorization gives a wrong value
```
a(b^2 - c^2) + b(c^2 - a^2) + c(a^2 - b^2)
= ab^2 - ac^2 + bc^2 - a^2 b + a^2 c - b^2 c
= ab(b-a) + bc(c-b) + ac(a-c)
=ab(b-a) + bc(c-b) + ca^2-c^2a
= a(b^2 - c^2) + b(c^2 - a^2) + c(a^2 - b^2) = -(a-b)(b-c)(a-c)
If a=1, b=1 c=0, we have
0.
```
FINAL ANSWER: 0
There is no solution in positive integers.
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4. 최종적인答え
0
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4. 最終的な答え
0
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