因式分解a^m+2-a^ma²(x-y)^3+9b²(y-x)^3a²-1+b²-2ab
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![因式分解a^m+2-a^ma²(x-y)^3+9b²(y-x)^3a²-1+b²-2ab](/uploads/image/z/2982002-50-2.jpg?t=%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3a%5Em%2B2-a%5Ema%26%23178%3B%28x-y%29%5E3%2B9b%26%23178%3B%28y-x%29%5E3a%26%23178%3B-1%2Bb%26%23178%3B-2ab)
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因式分解a^m+2-a^ma²(x-y)^3+9b²(y-x)^3a²-1+b²-2ab
因式分解a^m+2-a^m
a²(x-y)^3+9b²(y-x)^3
a²-1+b²-2ab
因式分解a^m+2-a^ma²(x-y)^3+9b²(y-x)^3a²-1+b²-2ab
=a^m(a²-1)
=a^m(a+1)(a-1)
=a方m(a方-1)=a方m(a+1)(a-1)
第一题答案是2