a^n+2-18a^n+81a^n-2
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a^n+2-18a^n+81a^n-2a^n+2-18a^n+81a^n-2a^n+2-18a^n+81a^n-2a^n+2-18a^n+81a^n-2=a^n-18a^n+81a^n=(1-18+8
a^n+2-18a^n+81a^n-2
a^n+2-18a^n+81a^n-2
a^n+2-18a^n+81a^n-2
a^n+2-18a^n+81a^n-2
=a^n-18a^n+81a^n
=(1-18+81)a^n
=64a^n
a^n+2-18a^n+81a^n-2
=a^n-18a^n+81a^n
=(1-18+81)a^n
=64a^n
a^n+2-18a^n+81a^n-2
=a^(n-2)(a^4-18a²+1)
=a^(n-2)(a²-9)²
=a^(n-2)(a-3)²(a+3)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 .
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