作业帮[(m+3n)(m-3n)+(2n-m)^2+5n^2(1-m)-(2m^2-m^2n)]÷(-1/2mn),其中m=7/2,n=200
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/18 02:37:22
![[(m+3n)(m-3n)+(2n-m)^2+5n^2(1-m)-(2m^2-m^2n)]÷(-1/2mn),其中m=7/2,n=200](/uploads/image/z/1811492-44-2.jpg?t=%5B%28m%2B3n%29%28m-3n%29%2B%282n-m%29%5E2%2B5n%5E2%281-m%29-%282m%5E2-m%5E2n%29%5D%C3%B7%28-1%2F2mn%29%2C%E5%85%B6%E4%B8%ADm%3D7%2F2%2Cn%3D200)
[(m+3n)(m-3n)+(2n-m)^2+5n^2(1-m)-(2m^2-m^2n)]÷(-1/2mn),其中m=7/2,n=200
[(m+3n)(m-3n)+(2n-m)^2+5n^2(1-m)-(2m^2-m^2n)]÷(-1/2mn),其中m=7/2,n=200
[(m+3n)(m-3n)+(2n-m)^2+5n^2(1-m)-(2m^2-m^2n)]÷(-1/2mn),其中m=7/2,n=200
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