题目内容
若
=
+
,化简3(
+2
)-2(3
+
)-2(
+
)=______.
| a |
| b |
| c |
| a |
| b |
| b |
| c |
| a |
| b |
原式=3
+6
-6
-2
-2
-2
=
-2(
+
)=-
故答案为-
| a |
| b |
| b |
| c |
| a |
| b |
=
| a |
| b |
| c |
| a |
故答案为-
| a |
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