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填空题:(1)a²+3a+2=_______(2)a²-3a+2=________(3)a²+9a+8=_______(4)a²-...
填空题:
(1)a²+3a+2=_______ (2)a²-3a+2=________
(3)a²+9a+8=_______ (4)a²-6a+8=________
(5)a²-a-2=________ (6)a²+a-2=_______
(7)a²-2a-8=_________ (8)a²+7a-8=_______ 展开
(1)a²+3a+2=_______ (2)a²-3a+2=________
(3)a²+9a+8=_______ (4)a²-6a+8=________
(5)a²-a-2=________ (6)a²+a-2=_______
(7)a²-2a-8=_________ (8)a²+7a-8=_______ 展开
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