题目内容
计算:
(1)2a-a=______.
(2)x2-3x+______=(x-______)2.
(1)2a-a=______.
(2)x2-3x+______=(x-______)2.
(1)2a-a=a;
(2)x2-3x+(
)2=(x-
)2.
故答案为a;
,
.
(2)x2-3x+(
| 3 |
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故答案为a;
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| 3 |
| 2 |
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