若m^2+3m-1=0,则【(m-3)/(3m^2-6)】除以【(m+2)-(5)/(m-2)】
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![若m^2+3m-1=0,则【(m-3)/(3m^2-6)】除以【(m+2)-(5)/(m-2)】](/uploads/image/z/13637013-69-3.jpg?t=%E8%8B%A5m%5E2%2B3m-1%3D0%2C%E5%88%99%E3%80%90%28m-3%29%2F%283m%5E2-6%29%E3%80%91%E9%99%A4%E4%BB%A5%E3%80%90%28m%2B2%29-%285%29%2F%28m-2%29%E3%80%91)
若m^2+3m-1=0,则【(m-3)/(3m^2-6)】除以【(m+2)-(5)/(m-2)】
若m^2+3m-1=0,则【(m-3)/(3m^2-6)】除以【(m+2)-(5)/(m-2)】
若m^2+3m-1=0,则【(m-3)/(3m^2-6)】除以【(m+2)-(5)/(m-2)】
m^2+3m-1=0,m^2=1-3m
【(m-3)/(3m^2-6)】除以【(m+2)-(5)/(m-2)】
=[(m-3)/(3(m^2-2))] / [(m+2)-5/(m-2)]
=[(m-3)/(3(1-3m-2))] / [(m^2-4-5)/(m-2)]
=-[(m-3)/(3(3m+1))] / (m+3)(m-3)/(m-2)]
=-[(m-3)/(3(3m+1))] * [(m-2)/((m+3)(m-3))]
=-(m-2)/[3(3m+1)(m+3)]
=-(m-2)/[3(3m^2+10m+3)]
=-(m-2)/[3(3-9m+10m+3)]
=-(m-2)/[3(m+6)]