[4﹙x-2﹚+12﹙x+2﹚﹙x-2﹚-8﹙x-2﹚﹙x-1﹚]÷4﹙x-2﹚
3个回答
[4﹙x-2﹚+12﹙x+2﹚﹙x-2﹚-8﹙x-2﹚﹙x-1﹚]÷4﹙x-2﹚
=1+3﹙x+2﹚-2﹙x-1﹚
=1+3x+6-2x+2
=x+9
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