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数学,大家帮帮我
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
1个回答
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1.=(a+1)(a+2) 2.=(a-1)(a-2)
3.=(a+1)(a+8) 4.=(a-2)(a-4)
5.=(a-2)(a+1) 6.=(a-1)(a+2)
7.=(a-4)(a+2) 8.=(a-1)(a+8)
3.=(a+1)(a+8) 4.=(a-2)(a-4)
5.=(a-2)(a+1) 6.=(a-1)(a+2)
7.=(a-4)(a+2) 8.=(a-1)(a+8)
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