﹙a-2分之3+a²-4分之12﹚÷﹙a-2分之2-a+2分之1﹚ 前后都乘(a-2)(a+2)
=[3(a+2)+12]÷[2(a+2)-(a-2)]
=(3a+6+12)÷(2a+4-a+2)
=(3a+18)÷(a+6)
=3
分式,﹙a-2分之3+a²-4分之12﹚÷﹙a-2分之2-a+2分之1﹚=
分式,﹙a-2分之3+a²-4分之12﹚÷﹙a-2分之2-a+2分之1﹚=
數(shù)學(xué)人氣:235 ℃時間:2020-01-28 00:15:08
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