已知2a-3b+c=0,3a-2b-6c=0,abc≠0,则(a³-2b³+c³)/(a²b-2b²c+3ac²)=一定要写过程,快!
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![已知2a-3b+c=0,3a-2b-6c=0,abc≠0,则(a³-2b³+c³)/(a²b-2b²c+3ac²)=一定要写过程,快!](/uploads/image/z/970600-40-0.jpg?t=%E5%B7%B2%E7%9F%A52a-3b%2Bc%3D0%2C3a-2b-6c%3D0%2Cabc%E2%89%A00%2C%E5%88%99%28a%26%23179%3B-2b%26%23179%3B%2Bc%26%23179%3B%29%2F%28a%26%23178%3Bb-2b%26%23178%3Bc%2B3ac%26%23178%3B%29%3D%E4%B8%80%E5%AE%9A%E8%A6%81%E5%86%99%E8%BF%87%E7%A8%8B%EF%BC%8C%E5%BF%AB%EF%BC%81)
已知2a-3b+c=0,3a-2b-6c=0,abc≠0,则(a³-2b³+c³)/(a²b-2b²c+3ac²)=一定要写过程,快!
已知2a-3b+c=0,3a-2b-6c=0,abc≠0,则(a³-2b³+c³)/(a²b-2b²c+3ac²)=
一定要写过程,快!
已知2a-3b+c=0,3a-2b-6c=0,abc≠0,则(a³-2b³+c³)/(a²b-2b²c+3ac²)=一定要写过程,快!
(1)×2-(2)×3得
-5a+20c=0
∴a=4c
把a=4c代入(1)得
8c-3b+c=0
∴b=3c
把a=4c,b=3c代入原式得
原式=(64c³-54c³+c³)/(48c³-18c³+12c³)
=11c³/42c³
=11/42