作业帮若-2x^2*y(-x^m*y+3xy^3)=2x^5y^2-6x^3y^n,求m,n的值?
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若-2x^2*y(-x^m*y+3xy^3)=2x^5y^2-6x^3y^n,求m,n的值?
若-2x^2*y(-x^m*y+3xy^3)=2x^5y^2-6x^3y^n,求m,n的值?
若-2x^2*y(-x^m*y+3xy^3)=2x^5y^2-6x^3y^n,求m,n的值?
-2(x^2)y×[-(x^m)×y + 3xy^3] = 2x^5y^2 - 6x^3y^n
2x^(2+m)y^2 - 6x^3y^4 = 2x^5y^2 - 6x^3y^n
由此可得：2+m=5 ,m=3
n=4
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