a^5-a简便运算

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a^5-a简便运算a^5-a简便运算a^5-a简便运算a^5-a=a(a^4-1=a(a^2+1)(a^2-1)=a(a^2+1)(a+1)(a-1)原式=a(a^4-1)=a(a^2+1)(a^2-

a^5-a简便运算
a^5-a简便运算

a^5-a简便运算
a^5-a
=a(a^4-1
=a(a^2+1)(a^2-1)
=a(a^2+1)(a+1)(a-1)

原式=a(a^4-1)=a(a^2+1)(a^2-1)=a(a+1)(a-1)(a^2+1)

因式分a(a^2+1)(a+1)(a-1)