3/(8-4x)将分母化为4（x+1）(x-2)要详解.

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3/(8-4x)将分母化为4（x+1）(x-2)要详解.3/(8-4x)将分母化为4（x+1）(x-2)要详解.3/(8-4x)将分母化为4（x+1）(x-2)要详解.3/(8-4x)=3/[4(2-

3/(8-4x)将分母化为4（x+1）(x-2)要详解.
3/(8-4x)将分母化为4（x+1）(x-2)要详解.

3/(8-4x)将分母化为4（x+1）(x-2)要详解.
3/(8-4x)=3/[4(2-x)]=[3(x+1)]/[4(x+1)(2-x)]=[ - 3(x+1)]/[4(x+1)(x-2)]