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(4X^2+12X)/(X^2+X-6)除以[(X-2)/(X+2)-(X+2)/(X-2)]

题目详情
(4X^2+12X)/(X^2+X-6)除以[(X-2)/(X+2)-(X+2)/(X-2)]
▼优质解答
答案和解析
(4X^2+12X)/(X^2+X-6)=[4x(x+3)]/[(x+3)(x-2)]=4x/(x-2)
[(X-2)/(X+2)-(X+2)/(X-2)] =(-8x)/[(x+2)(x-2)]
两式相除得:-(x+2)/2
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