4-4m+m²/2m-6÷(m+2)·3-m/m²-4_数学解答

4-4m+m²/2m-6÷(m+2)·3-m/m²-4

人气：326 ℃　时间：2020-04-09 12:28:36

解答

原式=(m-2)²/2(m-3)×1/(m+2)×[-(m-3)/(m+2)(m-2)]
=-(m-2)/[2(m+2)²]
=(m-2)/(2m²+8m+8)