a^n+2 -18a ^n +81a^n-2.(n为正整数且n>2)分解因式 .
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![a^n+2 -18a ^n +81a^n-2.(n为正整数且n>2)分解因式 .](/uploads/image/z/816623-71-3.jpg?t=a%5En%2B2+-18a+%5En+%2B81a%5En-2.%28n%E4%B8%BA%E6%AD%A3%E6%95%B4%E6%95%B0%E4%B8%94n%3E2%29%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F+.)
a^n+2 -18a ^n +81a^n-2.(n为正整数且n>2)分解因式 .
a^n+2 -18a ^n +81a^n-2.(n为正整数且n>2)
分解因式 .
a^n+2 -18a ^n +81a^n-2.(n为正整数且n>2)分解因式 .
a^(n+2)-18a^n+81a^(n-2)
=a^(n-2)*(a^4-18a^2+81)
=:a^n*(a-9/a)^2
a^n+2-18a^n+81a^n-2
a^n+2-18a^n+81a^n-2(n>2且n为整数)因式分解
因式分解:a^n+2-18a^n+81a^n-2(n>2且n为整数)
a^n+2 -18a ^n +81a^n-2.(n为正整数且n>2)分解因式 .
求因式分解解题过程a^(n+2)-18a^n+81a^(n-2)=
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