分式计算,(2m+4)/(m²-4m+4)*(m²-4)*(2m-4)/(m的4次方-16)
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分式计算,(2m+4)/(m²-4m+4)*(m²-4)*(2m-4)/(m的4次方-16)
分式计算,(2m+4)/(m²-4m+4)*(m²-4)*(2m-4)/(m的4次方-16)
分式计算,(2m+4)/(m²-4m+4)*(m²-4)*(2m-4)/(m的4次方-16)
原式=2(m+2)/(m-2)²*(m+2)(m-2)*2(m-2)/(m²+4)(m+2)(m-2)
=4(m+2)(m+2)(m-2)(m-2)/[(m-2)²(m²+4)(m+2)(m-2)]
=4(m+2)/[(m²+4)(m-2)]