(3a²)的三次方-6a的三次方(2a次方+3a²+a)
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![(3a²)的三次方-6a的三次方(2a次方+3a²+a)](/uploads/image/z/1088559-63-9.jpg?t=%283a%26%23178%3B%29%E7%9A%84%E4%B8%89%E6%AC%A1%E6%96%B9-6a%E7%9A%84%E4%B8%89%E6%AC%A1%E6%96%B9%282a%E6%AC%A1%E6%96%B9%2B3a%26%23178%3B%2Ba%29)
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(3a²)的三次方-6a的三次方(2a次方+3a²+a)
(3a²)的三次方-6a的三次方(2a次方+3a²+a)
(3a²)的三次方-6a的三次方(2a次方+3a²+a)
(3a²)3 -6a3 (2a3+3a²+a)
=27a6 -12a6-18a5-6a4
=15a6 -18a5-6a4
=3a4(5a2-6a-2)