试题:
(1)x2+6x+9=(x+______)2
(2)x2-______+
p2
4
=(x-
p
2
2

答案:

我来补答
(1)x2+6x+9=(x+3)2

(2)x2-px+
p2
4
=(x-
p
2
2
 
 
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