(a²+a)²+2/1(a²+a)+16/1因式分解
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(a²+a)²+2/1(a²+a)+16/1因式分解
(a²+a)²+2/1(a²+a)+16/1因式分解
(a²+a)²+2/1(a²+a)+16/1因式分解
(a²+a)²+2/1(a²+a)+16/1
=(a^2+a+1/4)^2
=【(a+1/2)^2】^2
=(a+1/2)^4
(a+1/2)^4