已知|m-2|+(3-3n)^2=0,化简2x^(m-n+1)y3-6y(m-n)x^2

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已知|m-2|+(3-3n)^2=0,化简2x^(m-n+1)y3-6y(m-n)x^2已知|m-2|+(3-3n)^2=0,化简2x^(m-n+1)y3-6y(m-n)x^2已知|m-2|+(3-3

已知|m-2|+(3-3n)^2=0,化简2x^(m-n+1)y3-6y(m-n)x^2
已知|m-2|+(3-3n)^2=0,化简2x^(m-n+1)y3-6y(m-n)x^2

已知|m-2|+(3-3n)^2=0,化简2x^(m-n+1)y3-6y(m-n)x^2
|m-2|+(3-3n)^2=0,化简2x^(m-n+1)y3-6y(m-n)x^2
平方和绝对值的值恒为非负值,所以只有两个都为0的时候,和才为0
所以m-2=0,3-3n=0
=> m=2,n=1
所以m-n+1=2
m-n=1
2x^(m-n+1)y3-6y(m-n)x^2
=2x^2y^3-6y^2x^2