问题
解答题
计算：
|
答案
-3 a-1
=2 2-a
+3(a-2) (a-1)(a-2)
=2(a-1) (a-1)(a-2)
=3a-6+2a-2 (a-1)(a-2)
．5a-8 (a-1)(a-2)
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计算：
|
-3 a-1
=2 2-a
+3(a-2) (a-1)(a-2)
=2(a-1) (a-1)(a-2)
=3a-6+2a-2 (a-1)(a-2)
．5a-8 (a-1)(a-2)