问题 填空题
(1)x2-2x+______=(x-1)2;(2)x2+
3
2
x+
9
16
=(x+______)2
答案

(1)x2-2x+1=(x-1)2

(2)x2+

3
2
x+
9
16
=(x+
3
4
2

判断题
单项选择题