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问题
填空题
分解因式：
1
4
x
2
-xy+
y
2
=______．
答案
1
4
x
2
-xy+
y
2
=
(
1
2
x-y
)
2
．
故答案为：
(
1
2
x-y
)
2
．
选择题
Last week, I went to see the concert of Jay Chow, ____ famous singer I love best, and this is the first time I have seen him in _____ fresh.
A. the; / B. the; the C. a; the D. a; /
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填空题
分解因式：x
3
-64=______．
查看答案
