题目内容
(
x
+6x
)-(x2
-y
).
| 2 |
| 3 |
| 9x |
|
|
|
(
x
+6x
)-(x2
-y
)
=2x
+6
-x
+
=x
+
.
| 2 |
| 3 |
| 9x |
|
|
|
=2x
| x |
| xy |
| x |
y
| ||
| x |
=x
| x |
| 6x+y |
| x |
| xy |
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题目内容
| 2 |
| 3 |
| 9x |
|
|
|
| 2 |
| 3 |
| 9x |
|
|
|
| x |
| xy |
| x |
y
| ||
| x |
| x |
| 6x+y |
| x |
| xy |