先化简,再求值[(m-3)/(3m²-6m)]/[m+2-5/(m-2)] ,其中m是方程x²+3x-1=0的根m是方程x²+3x-1=0的根,
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![先化简,再求值[(m-3)/(3m²-6m)]/[m+2-5/(m-2)] ,其中m是方程x²+3x-1=0的根m是方程x²+3x-1=0的根,](/uploads/image/z/1169304-24-4.jpg?t=%E5%85%88%E5%8C%96%E7%AE%80%2C%E5%86%8D%E6%B1%82%E5%80%BC%5B%EF%BC%88m-3%EF%BC%89%2F%283m%26%23178%3B-6m%29%5D%2F%5Bm%2B2-5%2F%28m-2%29%5D+%2C%E5%85%B6%E4%B8%ADm%E6%98%AF%E6%96%B9%E7%A8%8Bx%26%23178%3B%2B3x-1%3D0%E7%9A%84%E6%A0%B9m%E6%98%AF%E6%96%B9%E7%A8%8Bx%26%23178%3B%2B3x-1%3D0%E7%9A%84%E6%A0%B9%EF%BC%8C)
先化简,再求值[(m-3)/(3m²-6m)]/[m+2-5/(m-2)] ,其中m是方程x²+3x-1=0的根m是方程x²+3x-1=0的根,
先化简,再求值[(m-3)/(3m²-6m)]/[m+2-5/(m-2)] ,其中m是方程x²+3x-1=0的根
m是方程x²+3x-1=0的根,
先化简,再求值[(m-3)/(3m²-6m)]/[m+2-5/(m-2)] ,其中m是方程x²+3x-1=0的根m是方程x²+3x-1=0的根,
原式=[(m-3)/3m(m-2)]/[(m^2-4-5)/(m-2)]
=[(m-3)/3m(m-2)]*(m-2)/(m+3)(m-3)
=1/3m(m+3)
=1/3(m^2+3m)
=1/3*1
=1/3